The Sidewinder is a 1964 album by the jazz trumpeter Lee Morgan, recorded at the Van Gelder Studio in Englewood, New Jersey, U.S. It was released on the Blue Note label as BLP 4157 (mono) and BST 84157 (stereo). The title track is perhaps Morgan's all-around best-known composition; it would go on to become a jazz standard, and was additionally released as a single.

The album became Blue Note's best-selling record ever, breaking the previous sales record and saving the label from near bankruptcy. Record producer Michael Cuscuna recalls the unexpected success: "the company issued only 4,000 copies upon release. Needless to say, they ran out of stock in three or four days. And 'The Sidewinder' became a runaway smash making the pop 100 charts." By January 1965, the album had reached No. 25 on the Billboard chart.