Crosby, Stills & Nash is the debut studio album by the folk rock supergroup Crosby, Stills & Nash (CSN), released in 1969 by Atlantic Records. It is the only release by the band prior to adding Neil Young to their lineup. The album spawned two Top 40 singles, "Marrakesh Express" and "Suite: Judy Blue Eyes", which peaked respectively at No. 28 during the week of August 23, 1969, and at No. 21 during the week of December 6, 1969, on the US Billboard Hot 100. The album itself peaked at No. 6 on the US Billboard Top Pop Albums chart. It has been certified four times platinum by the RIAA for sales of 4,000,000.

Graham William Nash is an English-American musician, singer and songwriter. He is known for his light tenor voice and for his contributions as a member of the Hollies and Crosby, Stills & Nash.