William True Sleeper (February 9, 1819 - September 24, 1904) was an American Congregationalist clergyman, educator, poet, and hymn-writer.

[3][2] Sleeper and his wife Emily both taught at Woodman Sanbornton Academy before his ordination.

[4] After ordination on June 29, 1854, he did missionary work in Worcester, Massachusetts and was Chaplain of the State Reform School for Boys from 1856 to 1860.

[3][5] Sleeper also served as supervisor of schools in Aroostook County from 1868 to 1871, president of the Aroostook Valley Railroad in 1874, and established and edited the periodicals The Voice and The North Star.

[2] Sleeper published a book of poems in 1883, which included two which would later become hymns: "Jesus, I Come" (also known as "Out of My Bondage, Sorrow and Night") and "Ye Must Be Born Again."