OBOS may stand for: Obos (fountain), a sculptural fountain by George Tsutakawa at the Jefferson National Life Building in downtown Indianapolis, Indiana. Our Bodies, Ourselves, a book by Boston Women's Health Book Collective first published in 1971. Oslo Bolig- og Sparelag, a Norwegian housing company founded by Martin Strandli. OpenBeOS, an operating system now known as Haiku https://en.wikipedia.org/wiki/OBOS