Acronyms

• Office of Rail Regulation
  Office of Rail Regulation
  The Office of Rail Regulation is a statutory board which is the combined economic and safety regulatory authority for Great Britain's railway network. It was established on 5 July 2004 by the Railways and Transport Safety Act 2003, replacing the Rail Regulator...
  
  , UK government agency
• Office of Refugee Resettlement, part of the United States Administration for Children and Families
  Administration for Children and Families
  The Administration for Children and Families is a division of the United States Department of Health and Human Services . It is headed by the Assistant Secretary for Children and Families. It has a $58.8 billion budget for 65 programs that target children, youth and families...
  
  
• Offshore Racing Rules, system to permit different sailboats racing against each other
• Oxygen reduction reaction, a type of chemical reaction
• Outer Ring Road
  Outer Ring Road
  -China:*S20 expressway , often referred to as the Outer Ring Road*Outer Ring Road -India:*Outer Ring Road, Chennai*Outer Ring Road, New Delhi*Outer Ring Road *Outer Ring Road -Malaysia:...
  
  , a series of Roads in various places around the world
• Outer Ring Road, Bangalore
• Outer Ring Road, Chennai
  Outer Ring Road, Chennai
  The Outer Ring Road is a major transport corridor being developed along the periphery of Chennai Metropolitan Area by the Chennai Metropolitan Development Authority . It is 62.3 km long connecting NH 45 at Vandalur, NH 4 at Nazarathpet, NH 205 at Nemilicherry, NH 5 at Nallur and TPP road...
  
  
• Outer Ring Road, Delhi
• Outer Ring Road, Hyderabad