Ruf or RUF may refer to: Charles Francis Ruf (1905-1985), American actor better known as Frank Faylen Ruf Automobile, a German automobile manufacturer Ruf Beats, a British hip hop record label Ruf Records, a German blues record label Reformed University Fellowship, a Christian campus ministry of the Presbyterian Church in America RNA of unknown function Revolutionary United Front of Sierra Leone Darin Ruf (born 1986), American baseball player Wolfgang Ruf (born 1941), German musicologist Rapid Urban Flexible, dual-mode transit system Ruf, a Japanese eroge studio, notably the developers for Yume Miru Kusuri