"Oh Happy Day" is a 1967 gospel music arrangement of an 18th-century hymn. Recorded by the Edwin Hawkins Singers, it became an international hit in 1969, reaching No. 4 on the US Singles Chart, No. 1 in France, Germany and the Netherlands and No. 2 on both the UK singles chart and Irish Singles Chart. It has since become a gospel music standard.

The recording is notable for the muted piano, drum and bass backing and the dominant use of the left-hand stereo channel which features the performance of lead singer, Dorothy Combs Morrison. The recording was made at Hawkin's church, the Ephesian Church of God in Christ in Berkeley, California.

Edwin Hawkins’ gospel style arrangement of the hymn "Oh, Happy Day" has a long pedigree: It began as a hymn written in the mid-18th century ("O happy day, that fixed my choice") by English clergyman Philip Doddridge (based on Acts 8:35) set to an earlier melody (1704) by J. A. Freylinghausen. By the mid-19th century it had been given a new melody by Edward F. Rimbault, who also added a chorus, and was commonly used for baptismal or confirmation ceremonies in the UK and USA. The 20th century saw its adaptation from 3/4 to 4/4 time and this new arrangement by Hawkins, which contains only the repeated Rimbault refrain, with all of the original verses being omitted.

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