Stax Records is an American record company, originally based in Memphis, Tennessee. Founded in 1957 as Satellite Records, the label changed its name to Stax Records in September 1961. It also shared its operations with sister label Volt Records.

Stax was influential in the creation of Southern soul and Memphis soul music. Stax also released gospel, funk, and blues recordings. Renowned for its output of blues music, the label was founded by two siblings and business partners, Jim Stewart and Estelle Axton (STewart/AXton = Stax). It featured several popular ethnically integrated bands (including the label's house band, Booker T. & the M.G.'s) and a racially integrated team of staff and artists unprecedented in that time of racial strife and tension in Memphis and the South. According to ethnomusicologist Rob Bowman, the label's use of "one studio, one equipment set-up, the same set of musicians and a small group of songwriters led to a readily identifiable sound. It was a sound based in black gospel, blues, country, and earlier forms of rhythm and blues (R&B). It became known as southern soul music."

Following the death of Stax's biggest star, Otis Redding, in 1967, and the severance of the label's distribution deal with Atlantic Records in 1968, Stax continued primarily under the supervision of a new co-owner, Al Bell. Over the next five years, Bell expanded the label's operations significantly, in order to compete with Stax's main rival, Motown Records in Detroit. During the mid-1970s, a number of factors, including a problematic distribution deal with CBS Records, caused the label to slide into insolvency, resulting in its forced closure in late 1975.

In 1977, Fantasy Records acquired the post-1968 Stax catalogue and selected pre-1968 recordings. Beginning in 1978, Stax (now owned by Fantasy) began signing new acts and issuing new material, as well as reissuing previously recorded Stax material. However, by the early 1980s, no new material was being issued on the label, and for the next two decades, Stax was strictly a reissue label.

After Concord Records acquired Fantasy in 2004, the Stax label was reactivated, and is today used to issue both the 1968–1975 catalog material and new recordings by current R&B and soul performers. Atlantic Records continues to hold the rights to the vast majority of the 1959–1968 Stax material.