Frédéric Louis Ritter (22 June 1834 – 6 July 1891) was a French composer, choral conductor, teacher, and author.
In New York, he married Fannie Raymond, his second wife.
The same year, he was appointed professor of music at Vassar College, although he didn't move to the campus in Poughkeepsie until 1874.
Albert Metcalf purchased Ritter's music library at auction and donated it to Tufts University by 1901.
He composed many songs, orchestral, church, and piano works.