A Program Executive Officer, or PEO, is one of a few key individuals in the United States military

Military of the United States

The United States Armed Forces are the military forces of the United States. They consist of the Army, Navy, Marine Corps, Air Force, and Coast Guard.The United States has a strong tradition of civilian control of the military...

 acquisition process. As can be seen from the examples below, a Program Executive Officer may be responsible for a specific program (e.g., the Joint Strike Fighter), or for an entire portfolio of similar programs (e.g., the Air Force PEO for Space, who is responsible for all acquisition programs at the Air Force Space Command

Air Force Space Command

Air Force Space Command is a major command of the United States Department of the Air Force, with its headquarters at Peterson Air Force Base, Colorado. AFSPC supports U.S. military operations worldwide through the use of many different types of satellite, launch and cyber operations....

 Space and Missile Systems Center

Space and Missile Systems Center

The Space and Missile Systems Center is a part of Air Force Space Command of the United States Air Force. SMC is the Air Force’s product center for the development and acquisition of space and missile systems...

, or the Navy PEO for Aircraft Carriers).

The current Program Executive Officers include (but may not be limited to):

Army

• Ammunition http://www.pica.army.mil/
• Aviation https://www.peoavn.army.mil
• Chemical and Biological Defense
• Combat Support & Combat Service Support http://peocscss.tacom.army.mil
• Command Control and Communications (Tactical)
• Enterprise Information Systems
• Ground Combat Systems
• Intelligence, Electronic Warfare and Sensors
• Missiles and Space
• Simulation, Training, and Instrumentation http://www.peostri.army.mil/
• Soldier

Navy

• Joint Strike Fighter
• Air ASW
  Anti-submarine warfare
  Anti-submarine warfare is a branch of naval warfare that uses surface warships, aircraft, or other submarines to find, track and deter, damage or destroy enemy submarines....
  
  , Assault, and Special Mission Programs
• Aircraft Carrier
  Aircraft carrier
  An aircraft carrier is a warship designed with a primary mission of deploying and recovering aircraft, acting as a seagoing airbase. Aircraft carriers thus allow a naval force to project air power worldwide without having to depend on local bases for staging aircraft operations...
  
  s
• C4I
• Space
• Enterprise Information Systems
• Integrated Warfare
• Littoral
  Littoral combat ship
  A Littoral Combat Ship is a type of relatively small surface vessel intended for operations in the littoral zone . It is "envisioned to be a networked, agile, stealthy surface combatant capable of defeating anti-access and asymmetric threats in the littorals." Two ship classes are the first...
  
   and Mine
  Naval mine
  A naval mine is a self-contained explosive device placed in water to destroy surface ships or submarines. Unlike depth charges, mines are deposited and left to wait until they are triggered by the approach of, or contact with, an enemy vessel...
  
   Warfare
• Ships
• Space Systems
• Strike Weapons and Unmanned Aviation
• Submarine
  Submarine
  A submarine is a watercraft capable of independent operation below the surface of the water. It differs from a submersible, which has more limited underwater capability...
  
  s
• Tactical Air Programs

Air Force

• Aircraft Aeronautical Systems Center
  Aeronautical Systems Center
  The Aeronautical Systems Center is an Air Force product center that designs, develops and delivers dominant aerospace weapon systems and capabilities for U.S. Air Force, other U.S. military, allied and coalition-partner warfighters, in support of Air Force leadership priorities...
  
  
• Agile Combat Systems (ACS)77th Aeronautical Systems Wing
  77th Aeronautical Systems Wing
  The 77th Aeronautical Systems Wing is a United States Air Force unit assigned to the Aeronautical Systems Center at Wright-Patterson Air Force Base, Ohio....
  
  
• Intelligence, Surveillance, and Reconnaissance / Special Operation Forces (ISR/SOF)
• Fighter / Bombers (FB)312th Aeronautical Systems Wing
  312th Aeronautical Systems Wing
  The 312th Aeronautical Systems Group is a component of the United States Air Force 312th Aeronautical Systems Wing. It is stationed at Wright-Patterson Air Force Base, Ohio and is assigned to Air Force Material Command ....
  
  
• Mobility 516th Aeronautical Systems Wing
  516th Aeronautical Systems Wing
  The 516th Aeronautical Systems Wing is a wing of the United States Air Force assigned to Wright-Patterson Air Force Base, Ohio.-Mission:...
  
  
• KC-46A
• Command and Control & Combat Support Systems (C2&CS)Electronic Systems Center
  Electronic Systems Center
  Electronic Systems Center is a product center of Air Force Materiel Command headquartered at Hanscom Air Force Base, Massachusetts. Its mission is to develop and acquire command and control, communications, computer, and intelligence systems. ESC consists of professional teams specializing in...
  
  
• Enterprise Logistics Systems
• Command and Control / Intelligence, Surveillance, and Reconnaissance (C2ISR)
• Cyber NetCentric
• Battle Management
• Enterprise Information Systems
• Strategic Systems
• Weapons
• Services
• Space Systems
• Rapid Capability
• Joint Strike Fighter (JSF)