"I Wonder as I Wander" is a Christian folk hymn, typically performed as a Christmas carol, written by American folklorist and singer John Jacob Niles. The hymn has its origins in a song fragment collected by Niles on July 16, 1933.

John Jacob Niles was an American composer, singer and collector of traditional ballads. Called the "Dean of American Balladeers," Niles was an important influence on the American folk music revival of the 1950s and 1960s, with Odetta, Joan Baez, Burl Ives, Peter, Paul and Mary and Bob Dylan, among others, recording his songs.