James Cutler Dunn Parker (June 2, 1828 – November 27, 1916) was an American organist, educator and composer.

[1] After graduating from Harvard Law School, Parker went to the Leipzig Conservatory in 1851, where he studied piano with Ignaz Moscheles and Louis Plaidy, composition with Julius Rietz and Ernst Richter, and music theory and harmony with Moritz Hauptmann.

In 1862, several of his private students formed the Parker Club, which offered concerts of instrumental and choral music.

[1] From 1864 to 1891, he served as organist at the Trinity Church, Boston, his career there coinciding almost completely with that of minister Phillips Brooks.

[1] Parker composed hymns, cantatas, oratorios, church music, and works for piano.