Under the Big Black Sun is the third studio album by American rock band X, and their major-label debut.

[1] In The Boston Phoenix, Sally Cragin reviewed the album in terms of the relationship between the band’s married leaders, singer Exene Cervenka and bassist/singer John Doe, "who set themselves apart by making their marriage into a public paradigm for love in the LA ruins."

Cragin felt that "Under the Big Black Sun's producer, Ray Manzarek, wisely keeps out of view, letting X's meaty dance reverberations speak for themselves.

Whereas Wild Gift balanced their voices, Big Black Sun certifies their nimble moves without advancing them.

The discovery of married tension songs has turned into a self-conscious trademark... Now, the main cliffhanger is: will John and Exene survive as a major-label marriage?