John Marvin Chamberlain (May 27, 1844 – May 5, 1930) was an English-born composer of Latter-day Saint hymns, a pianist and music store owner. His most widely sung hymn is "We Are Marching On to Glory". Chamberlain was born in Leicester, England. His parents were Latter-day Saints and in 1852 they left England to immigrate to Utah Territory. They sailed to New Orleans, then went up-river to Florence, Nebraska, and then crossed the plains to Salt Lake City. Chamberlain also served in the leadership of the Sunday School and as choir director in the 8th Ward in Salt Lake City.