Public companies

• Allegheny Energy
  Allegheny Energy
  Allegheny Energy is an electric utility headquartered in Greensburg, Pennsylvania. It owns and operates electric generation facilities and delivers electric services to customers in Pennsylvania, West Virginia, Maryland, and Virginia...
  
   (Energy)
• Allegheny Technologies
  Allegheny Technologies
  Allegheny Technologies, Inc. is a specialty metals company headquartered in Pittsburgh, Pennsylvania in the United States. Allegheny Technologies is one of the largest and most diversified specialty metals producers in the world with revenue of $3.0 billion in 2009. ATI's key markets are...
  
   (Industrial)
• American Eagle Outfitters
  American Eagle Outfitters
  American Eagle Outfitters is an American clothing and accessories retailer based in Pittsburgh, Pennsylvania. It was founded in 1977 by Mark and Jerry Silverman as a subsidiary of Retail Ventures, Inc., a company which also owned and operated Silverman's Menswear...
  
   (Retail/Consumer Goods)
• Ampco Pittsburgh
  Ampco Pittsburgh
  Ampco-Pittsburgh Corporation is a specialty steel manufacturer headquartered in Downtown Pittsburgh, Pennsylvania. It is one of several companies to bear the Ampco name, and it should not be confused with the Chicago based Ampco Metal Inc. copper base alloy producer, the Miami-based cabinetry...
  
   (Industrial)
• ANSYS (Technology)
• Atlas Energy
  Atlas America
  Atlas America, Inc. is a natural gas and oil extraction company based in suburban Pittsburgh, Pennsylvania. The corporation is also involved in the transportation of resources and features a pipeline division. The base of operations for the company is in the Appalachian shale deposits, as well as...
  
   (Energy)
• Atlas Pipeline (Energy)
• Black Box
  Black Box Corporation
  Black Box Corporation, d/b/a Black Box Network Services, is headquartered in the Pittsburgh suburb of Lawrence, Pennsylvania, USA. The company is a provider of communications and infrastructure solutions...
  
   (Technology)
• Calgon Carbon
  Calgon Carbon
  Calgon Carbon Corporation is a Pittsburgh, Pennsylvania based company that offers products and services that remove contaminants and odors from liquids and gases. The company was originally formed as the Pittsburgh Coke & Chemical Company, which provided products that assisted with the city's...
  
   (Industrial)
• Consol Energy
  Consol Energy
  Consol Energy is an energy company headquartered in the Pittsburgh, Pennsylvania, USA, suburb of Cecil Township, in the Southpointe complex. It is one of the US's largest coal mining companies, along with Peabody Energy and Arch Coal...
  
   (Energy)
• Dick's Sporting Goods
  Dick's Sporting Goods
  Dick's Sporting Goods, Inc. , or Dick's, is a Fortune 500 American corporation in the sporting goods and retail industries.The company's headquarters are on the grounds of Pittsburgh International Airport in Findlay Township near Pittsburgh, Pennsylvania. Dick's has 451 stores in 42 states as of...
  
   (Retail/Consumer Goods)
• DynaVox
  DynaVox
  DynaVox Mayer-Johnson is a US-based developer, manufacturer and distributor of Speech Generating Devices headquartered in Pittsburgh, PA. The company was formed in 1983 and has since become the leading provider of speech communication devices and symbol-adapted special education software used to...
  
   (Technology)
• Education Management Corporation
  Education Management Corporation
  Education Management Corporation is an operator of private for-profit post-secondary educational institutions, primarily in the United States. The company's institutions provide primarily career-focused educational programs...
  
   (Education)
• EQT
  EQT
  EQT Partners is a private equity firm with approximately €13 billion in equity capital. Founded in 1994 by Investor AB, EQT Partners manages, through holding companies, numerous funds under the EQT banner. The company employs more than 220 people, of which are approximately 120 investment...
  
   (Energy)
• Federated Investors
  Federated Investors
  Federated Investors is a large financial services company headquartered in Pittsburgh, Pennsylvania. Founded in 1955, the company manages $351.7 billion dollars of customer assets. The corporation offers 158 different types of mutual funds...
  
   (Financial)
• GNC
  General Nutrition Centers
  General Nutrition Centers is a Pittsburgh, Pennsylvania-based American commercial enterprise focused on the retail sale of health and nutrition related products, including vitamins, supplements, minerals, herbs, sports nutrition, diet & energy products.-History:In 1935, David Shakarian opened a...
  
   (Retail/Consumer Goods)
• H. J. Heinz Company
  H. J. Heinz Company
  The H. J. Heinz Company , commonly known as Heinz and famous for its "57 Varieties" slogan and its ketchup, is an American food company with world headquarters in Pittsburgh, Pennsylvania.Perhaps best known for its ketchup, the H.J...
  
   (Retail/Consumer Goods)
• Holliday Fenoglio Fowler
  Holliday Fenoglio Fowler
  HFF , with its affiliate HFF Securities L.P., is a large provider of commercial real estate and capital markets services to the U.S. commercial real estate industry. HFF offers a range of capital solutions including debt, equity, financial advisory, investment sales, loan sales and loan...
  
   (Financial)
• Horsehead (Industrial)
• Huntington Bancshares
  Huntington Bancshares
  Huntington Bancshares, Inc., is a US$53 billion Midwestern bank holding company headquartered in Columbus, Ohio. It is the 24th largest American bank. As of October 22, 2008, it was listed on the S&P 500...
  
   (Financial)
• II-VI
  II-VI Incorporated
  II-VI Incorporated is a high tech manufacturer of engineered components for both the manufacturing sector and the defense industry. Founded in 1971 in Saxonburg, Pennsylvania II-VI Incorporated is a high tech manufacturer of engineered components for both the manufacturing sector and the defense...
  
   (Industrial)
• Kennametal
  Kennametal
  Kennametal is a leading producer of metals founded in 1938 in the Pittsburgh suburb of Latrobe, Pennsylvania and still headquartered there. It delivers productivity to customers seeking peak performance in demanding environments by providing innovative custom and standard wear-resistant solutions...
  
   (Industrial)
• Koppers
  Koppers
  Koppers is a global chemical and materials company based in Downtown Pittsburgh, Pennsylvania, United States in an art-deco 1920s skyscraper, the Koppers Tower.-Structure:...
  
   (Industrial)
• L. B. Foster (Industrial)
• Mastech (Services)
• Matthews International (Energy)
• Michael Baker (Industrial)
• Mine Safety Appliances
  Mine Safety Appliances
  Mine Safety Appliances, or MSA, is a maker of sophisticated safety products that help protect workers who may be exposed to a variety of hazardous conditions...
  
   (Industrial)
• Mylan (Medical)
• Nova Chemicals
  NOVA Chemicals
  NOVA Chemicals Corporation is a plastics and chemical company headquartered in Calgary, Alberta, with Executive Offices in the Pittsburgh suburb of Moon Township, Pennsylvania and Lambton County, Ontario. It was founded in 1954 as Alberta Gas Trunk Lines and was later renamed to NOVA Corporation...
  
   (Industrial)
• PNC Financial Services
  PNC Financial Services
  PNC Financial Services Group, Inc. is a U.S.-based financial services corporation, with assets of approximately $264.3 billion...
  
   (Financial)
• PPG Industries
  PPG Industries
  PPG Industries is a global supplier of paints, coatings, optical products, specialty materials, chemicals, glass and fiber glass. With headquarters in Pittsburgh, Pennsylvania, PPG operates in more than 60 countries around the globe. Sales in 2010 were $13.4 billion...
  
   (Industrial)
• RTI International Metals
  RTI International Metals
  RTI International Metals , which was founded in 1950, is a leading US producer of titanium mill products and fabricated metal components for the global market...
  
   (industrial)
• rue21
  Rue21
  Formerly known as Pennsylvania Fashions Inc., rue21 Inc., headquartered in Warrendale, Pennsylvania, is a specialty discount retailer of young men and women’s casual apparel and accessories. On November 13, 2009, rue21 announced its initial public offering. The company trades on the NASDAQ under...
  
   (Retail)
• TMS International (Services)
• Tollgrade (Technology)
• Universal Stainless & Alloy Products (Industrial)
• U.S. Steel
  U.S. Steel
  The United States Steel Corporation , more commonly known as U.S. Steel, is an integrated steel producer with major production operations in the United States, Canada, and Central Europe. The company is the world's tenth largest steel producer ranked by sales...
  
   (Industrial)
• WESCO International
  WESCO International
  WESCO International, Inc. is a holding company for WESCO Distribution, a multinational electronics distribution and services company based in Pittsburgh, Pennsylvania.-History:...
  
   (Industrial)
• Wabtec
  Wabtec
  Wabtec Corporation is an American company formed by the merger of the Westinghouse Air Brake Company and MotivePower Industries Corporation in 1999....
  
   (Industrial)
• Westinghouse Electric Company
  Westinghouse Electric Company
  Westinghouse Electric Company LLC is a nuclear power company, offering a wide range of nuclear products and services to utilities throughout the world, including nuclear fuel, service and maintenance, instrumentation and control and advanced nuclear plant designs...
  
   (Industrial)
• Wizzard Software (Technology)

Large private companies

• 84 Lumber
  84 Lumber
  84 Lumber is an American building materials chain. 84 Lumber Company is the largest privately held building materials supplier to professional contractors in the country. Headquartered in the Pittsburgh Metro Area town of Eighty Four, Pennsylvania, it was founded in 1956 by Joseph Hardy...
  
   (Retail/Consumer Goods)
• ABARTA (Retail/Consumer Goods)
• American Bridge Company
  American Bridge Company
  The American Bridge Company is a privately held civil engineering firm specializing in the construction and renovation of bridges and other large civil engineering projects, founded in 1900, and headquartered in Coraopolis, Pennsylvania, a suburb of Pittsburgh.-Products and industry positioning:The...
  
   (Industrial)
• AMG Resources (Services)
• Armada Supply Chain Solutions (Services)
• Buchanan, Ingersoll & Rooney
  Buchanan, Ingersoll & Rooney
  Buchanan, Ingersoll & Rooney P.C. is a large U.S. law firm and lobbying group based in Pittsburgh, Pennsylvania. The firm has more than 450 lawyers in sixteen offices nationwide, and was ranked 108th on the National Law Journal's 2010 list of the 250 largest law firms in the United...
  
   (law firm)
• Eat'n Park
  Eat'n Park
  Eat'n Park is a restaurant chain based in Homestead, Pennsylvania with over 75 locations in Ohio, Pennsylvania, and West Virginia. The chain is known for its Smiley Cookies.-History:...
  
   (Retail/Consumer Goods)
• Farmers and Merchants Bank of Western Pennsylvania
  Farmers and Merchants Bank of Western Pennsylvania
  Farmers and Merchants Bank of Western Pennsylvania is a local bank in Kittanning, Pennsylvania. It is the result of the merger between the Merchants National Bank of Kittanning and the Farmers National Bank of Kittanning in early 2008....
  
  
• Gateway Health Plan (Healthcare)
• GENCO Supply Chain Solutions
• Giant Eagle
  Giant Eagle
  Giant Eagle, Inc., is a supermarket chain with stores in the U.S. states of Pennsylvania, Ohio, West Virginia, and Maryland. The company was founded in 1918 in Pittsburgh, Pennsylvania. Supermarket News ranked Giant Eagle No. 21 in the 2009 "Top 75 North American Food Retailers" based on 2008...
  
   (Retail/Consumer Goods)
• Guttman Group (Industrial)
• Guru.com
  Guru.com
  Guru.com is a freelance marketplace. It allows companies to find freelance workers for commissioned work. Founded in 1998 in Pittsburgh as eMoonlighter.com and still headquartered there, it is one of the tech firms to survive the dot-com bubble of the late 1990s...
  
  
• K&L Gates (law firm)
• NexTier Bank
  NexTier Bank
  NexTier Bank is a U.S.-based financial services corporation. They have fifteen branch locations in Allegheny, Butler, and Armstrong counties in western Pennsylvania.-Founding as Citizens National Bank:...
  
  
• Pitt Ohio Express
  Pitt Ohio Express
  Pitt Ohio Express is a $261.7 Million LTL or less than truckload carrier operating in the Mid-Atlantic and Midwest United States. Headquartered in Pittsburgh, Pennsylvania, Pitt Ohio Express began operations in 1979 by the Hammel family. Pitt Ohio Express is owned by Charles L. Hammel, III...
  
   (services)
• Reed Smith
  Reed Smith
  Reed Smith LLP is a global law firm, with more than 1,600 lawyers in 23 offices throughout the United States, Europe, the Middle East and Asia....
  
   (law firm)
• Wexford Health Sources
  Wexford Health Sources
  Wexford Health Sources, Inc. is a healthcare services company headquartered in Foster Plaza Two in Green Tree, Pennsylvania, near Pittsburgh.The Mississippi Department of Corrections contracts with Wexford, and Wexford provides medical services to inmates at state-operated facilities...
  
   (Healthcare)
• Zambelli Fireworks
  Zambelli Fireworks
  Zambelli Fireworks is a fireworks company based in New Castle, Pennsylvania, part of the Pittsburgh metropolitan area. Zambelli has produced shows that have been televised on "MSNBC Investigates", the Odyssey Network, the Discovery Channel, The Learning Channel, The National Geographic Channel and...
  
  

Nonprofit corporations

• Duquesne University
  Duquesne University
  Duquesne University of the Holy Spirit is a private Catholic university in Pittsburgh, Pennsylvania, United States. Founded by members of the Congregation of the Holy Spirit, Duquesne first opened its doors as the Pittsburgh Catholic College of the Holy Ghost in October 1878 with an enrollment of...
  
   (Education)
• Heritage Valley Health System (Healthcare)
• Highmark
  Highmark
  Highmark is a not-for-profit health insurance company based in Pittsburgh, Pennsylvania, United States. It is the largest health insurer in Pennsylvania, and through a purchase in 1996, the largest health insurer in West Virginia. As Highmark Blue Cross Blue Shield, it primarily serves the 29...
  
   (Healthcare)
• Jefferson Regional Medical Center (Healthcare)
• Pittsburgh Mercy Health System (Healthcare)
• Presbyterian SeniorCare
• St. Clair Hospital (Healthcare)
• University of Pittsburgh Medical Center
  University of Pittsburgh Medical Center
  The University of Pittsburgh Medical Center is an $9 billion integrated global nonprofit health enterprise that has 54,000 employees, 20 hospitals, 4,200 licensed beds, 400 outpatient sites and doctors’ offices, a 1.5 million-member health insurance division, as well as commercial and...
  
   (Healthcare)
• The Washington Hospital
  The Washington Hospital
  The Washington Hospital is a major hospital and healthcare provider in Washington County, Pennsylvania. It is located in the City of Washington at 155 Wilson Avenue.-References:...
  
   (Healthcare)
• West Penn Allegheny Health System
  West Penn Allegheny Health System
  West Penn Allegheny Health System is an academic medical center located in the Pittsburgh metropolitan area. The second-largest provider of healthcare in its region, WPAHS was formed by the merger of the Western Pennsylvania Hospital , founded in 1848 as Pittsburgh's first chartered public...
  
   (Healthcare)

Other major companies

• American Thermoplastic Company
  American Thermoplastic Company
  American Thermoplastic Company, or ATC, is an American manufacturer of binders and other plastics products.ATC was founded in 1954 in Pittsburgh, PA.-External links:* *...
  
   (Industrial)
• Ariba Software (formerly Freemarkets)
• Bakery Barn (Food Manufacturing)
• Bayer USA
  Bayer USA
  Bayer Corporation is the Pittsburgh-based American arm of Bayer. Its headquarters are located in Robinson, a western suburb of the city...
  
   (Pharmaceutical)
• BodyMedia (Wearable Body Monitoring)
• Cohen & Grigsby, P.C. (law firm)
• Dollar Bank
  Dollar Bank
  Dollar Bank is a full service, regional bank serving both individuals and business customers, operating more than 50 branch offices and loan centers throughout the southwestern Pennsylvania and northeastern Ohio metropolitan areas. The bank’s Pennsylvania headquarters is located in downtown...
  
   (Financial)
• DQE
  DQE
  DQE Holdings is a traditional utility company based in downtown Pittsburgh, Pennsylvania. The company provides electric power to much of metro Pittsburgh, competing with longtime rival Allegheny Power and has extended its services into northern West Virginia and eastern Ohio...
  
   (Energy)
• Eaton
  Eaton Corporation
  Eaton Corporation is a global diversified power management company with 2010 sales of $13.7 billion. The company is a leading provider of electrical components and systems for power quality, distribution and control; hydraulics components, systems and services for industrial and mobile equipment;...
  
   Electrical
• ePeople, LLC
• Eckert Seamans Cherin & Mellott (law firm)
• FedEx Ground
  FedEx Ground
  FedEx Ground is a shipping company which is a subsidiary of the FedEx corporation. It is headquartered in Moon Township, Pennsylvania, a suburb of Pittsburgh. Originally conceived as a lower cost competitor to UPS, Roadway Package System was created to take advantage of new barcode, material...
  
   (Services)
• Fox Learning Systems
  Fox Learning Systems
  - Founding :Debra Fox is a former news anchor for WTAE-TV, the Pittsburgh ABC affiliate. She founded Fox Learning Systems after witnessing the training problems plaguing the long term care industry. "If you do training well enough, people will learn," said Fox in an interview with Seton Hill...
  
   (E-Learning)
• Heyl & Patterson Inc.
  Heyl & Patterson Inc.
  Heyl & Patterson Inc. is an American specialist engineering company, founded in 1887 and based in Pittsburgh, Pennsylvania.-19th Century:Heyl & Patterson was founded by Edmund W. Heyl and William J. Patterson in downtown Pittsburgh, Pennsylvania, initially as a sales agency for elevator and...
  
   (Industrial)
• Howard Hanna Real Estate Services (Real Estate)
• Inmedius (Software)
• Laurel Networks
  Laurel Networks
  Laurel Networks was founded in 1999, and specialized in routers for telecommunications carriers.Funding was provided in four rounds the first two of which were:Round 1: $12.3m, led by New Enterprise Associates and Rein Capital...
  
   or ECI Data Networking Division
• Lanxess
  Lanxess
  Lanxess AG is a specialty chemicals group based in Germany, with headquarters and major operations in Leverkusen. It was founded in 2004 when Bayer AG spun off its chemicals operations and parts of its polymer activities. As measured by sales, Lanxess is the fourth largest chemicals group in Germany...
  
   USA (Industrial)
• Liberty Tire Recycling
• Lycos Ventures
• Management Science Associates
• Medrad Inc.
  Medrad Inc.
  Medrad is an American company headquartered in Warrendale, PennsylvaniaIt was founded in 1964 by M. Stephen Heilman, a doctor who created the first flow-controlled, angiographic power injector in the kitchen of his home near Pittsburgh, Pennsylvania....
  
   (Medical)
• Mine Safety Appliances
  Mine Safety Appliances
  Mine Safety Appliances, or MSA, is a maker of sophisticated safety products that help protect workers who may be exposed to a variety of hazardous conditions...
  
   (Industrial)
• National Steel
• Modcloth
  Modcloth
  ModCloth is an American online retailer, based in Pittsburgh, PA, USA, that specializes in vintage, vintage-inspired and indie clothing, accessories and decor. ModCloth's website features a blog, ModCloth Blog, that covers fashion trends, cooking, green living and music. ModCloth carries indie...
  
  
• Oxford Development Company
• Philips Respironics (Medical)
• Portec Rail Products (Industrial)
• Respironics (Healthcare)
• StarKist (Retail/Consumer Goods)
• Thorp, Reed & Armstrong, LLP (law firm)
• UBICS (H1B Bodyshopping)
• Vocollect