"Fifth Dimension" is the third studio album by the American rock band The Byrds, released in July 1966 by Columbia Records. Recorded after the departure of principal songwriter Gene Clark in February 1966, the album features an increased songwriting contribution from guitarists Jim McGuinn and David Crosby, although it includes four cover songs and an instrumental. Critics noted the album's "wildly uneven" quality, reflecting the challenges of compensating for Clark's absence. Notably, this album marked the first time The Byrds did not include any Bob Dylan songs, a departure from their previous work.
The album peaked at number 24 on the Billboard Top LPs chart and number 27 on the UK Albums Chart. It features the singles "Eight Miles High" and "5D (Fifth Dimension)," with "Mr. Spaceman" also reaching the U.S. Top 40. Fifth Dimension is often regarded as The Byrds' most experimental album, playing a key role in the emergence of the psychedelic rock genre.
