Jermaine LaJuane Jackson (born December 11, 1954) is an American singer, songwriter and bassist. He is best known for being a member of the Jackson family. From 1964 to 1975, Jermaine was second vocalist after his brother Michael of the Jackson 5, and played bass guitar. In 1983, he rejoined the group, which had been renamed the Jacksons; he then consistently played in the group's performances and recordings until he left the group again in 2020.

While Jermaine did not usually sing the lead vocal on the Jackson Five's biggest hits, he is featured on "I'll Be There" and "I Want You Back", among others. When four of the brothers left Motown Records for Epic Records in 1976 (having to rename the family act The Jacksons in the process), Jermaine, who had just married Motown founder Berry Gordy's daughter Hazel, stayed at Motown. He was replaced in The Jacksons by his youngest brother, Randy. Jermaine had a solo career concurrent with his brother Michael's, including some top-30 hits, until the 1980s. He produced and recorded duets with Whitney Houston on her debut album in 1985, and was a producer for the band Switch. After seven years outside the group he rejoined the Jacksons, and remained until 2020 through various breakups and reunions.