Fairborn is a city in Greene County, Ohio, United States, near Dayton and Wright-Patterson Air Force Base. The population was 32,770 at the 2010 census. It is the only city in the world with the name of Fairborn, a portmanteau word created from the names Fairfield and Osborn, the two villages that merged in 1950. After the Great Dayton Flood of 1913, the region and state created a conservation district here and began construction of Huffman Dam on the Mad River in the 1920s for flood control. Residents of Osborn were relocated with their houses to an area alongside Fairfield.
Fairborn is part of the Dayton Metropolitan Statistical Area.
Wright State University, which serves nearly 20,000 undergraduate and graduate students, is located in Fairborn. The city is also home to the disaster training facility known informally as Calamityville.
This area was long part of historic Shawnee territory before European settlement. Earlier indigenous Native American inhabitants of the region included the Adena culture of Ohio and nearby states, and the subsequent Hopewell tradition, known from Illinois to Ohio and renowned for their construction of major geometric earthworks.