Dr. Byrds & Mr. Hyde is the seventh studio album by the American rock band the Byrds and was released in March 1969 on Columbia Records. The album was produced by Bob Johnston and saw the band juxtaposing country rock material with psychedelic rock, giving the album a stylistic split-personality that was alluded to in its title. It was the first album to feature the new band line-up of Clarence White (guitar), Gene Parsons (drums), John York (bass), and founding member Roger McGuinn (guitar). Dr. Byrds & Mr. Hyde is unique within the band's discography for being the only album on which McGuinn sings the lead vocal on every track.

Donald William "Bob" Johnston was an American record producer, best known for his work with Bob Dylan, Johnny Cash, Leonard Cohen, and Simon & Garfunkel.