Orr or ORR may also refer to: Acronyms Office of Rail and Road, a regulatory body in the United Kingdom Office of Refugee Resettlement, a program of the US Administration for Children and Families Oxygen reduction reaction, a type of chemical reaction Outer Ring Road (disambiguation), a series of roads in various places Operational Readiness Review (ORR), used by the US government ORR, objective response rate, or overall response rate, one of the parameters determined during clinical trials for pharmaceutical products Places Orr, Kentucky, United States, an unincorporated community Orr, Minnesota, United States, a small city Orr, West Virginia, United States, an unincorporated community Orr, a district of Pulheim, Germany Orr Glacier, Victoria Land, Antarctica Orr Island, Marie Byrd Land, Antarctica Orr Peak, Ross Dependency, Antarctica Urr Water, Scotland, United Kingdom, archaically known as the River Orr Orr Formation, a geologic formation in Utah, United States People Orr (surname), including a list of people with this name Orr Barouch (born 1991), Israeli footballer Fictional characters Orr (Catch-22), a fictional character in the novel Catch-22 and the film adaptation George Orr, protagonist of the science-fiction novel The Lathe of Heaven by Ursula K. Le Guin and two film adaptations Other uses Orr Academy High School, a public high school in Chicago, Illinois, United States Orr School, Texarkana, Arkansas, United States, on the National Register of Historic Places Yorketown Airport, IATA airport code "ORR" See also Ore (disambiguation) Orr-Ewing Baronets Orr's Island, Maine, United States