Milton Ager (October 6, 1893 – May 6, 1979) was an American composer.
Ager was born in Chicago, Illinois, the sixth of nine children. Leaving school with only three years of formal high-school education, he taught himself to play the piano and embarked on a career as a musician. After spending time as an accompanist to silent movies, he moved to New York to write music. During World War I he served as a morale officer.
Ager also was a music publisher in partnership with his frequent musical collaborator, lyricist Jack Yellen. He moved to Hollywood where he made a living writing songs for film. On his death, Milton Ager was interred in the Westwood Village Memorial Park Cemetery in Los Angeles.