agency from 1987 to 1996 Oklahoma Military Academy, from 1919–1982, the former name of Rogers State University in Claremore, Oklahoma Olympic Moustakbel d’Arzew, an Algerian football team Open Mashup Alliance, an industry group for enterprise mashups Orlando Museum of Art, an art museum in Orlando, Florida Orthologous MAtrix, a database of orthologous genes across multiple species