At San Quentin is the 31st overall album by Johnny Cash, and a recording of a live concert given to the inmates of San Quentin State Prison. The concert was filmed by Granada Television.


The album was a follow-up to Cash's previous live album, the critically acclaimed and commercially successful At Folsom Prison.


On the original LP
release, the song order was changed and several songs were cut,
presumably for space reasons. Despite the title of the version released
on CD in 2000 – At San Quentin (The Complete 1969 Concert)
– the CD does not contain the entire concert uncut, but does feature
additional tracks and running order that parallels the actual setlist.
In 2010, the album was reissued on vinyl by Sundazed Records with the
original Columbia catalog number LP 5362. The reissued Sundazed vinyl is
an exact copy of the original record except that the back cover has a
barcode and indicates it is a Sundazed issue. Performed but not included
were the songs "Jackson" and "Orange Blossom Special",
which are included in the video release of the show. The album was
certified gold on August 12, 1969, platinum and double platinum on
November 21, 1986, and triple platinum on March 27, 2003 by the RIAA.
The album was nominated for a number of Grammy Awards, including Album of the Year and won Best Male Country Vocal Performance for "A Boy Named Sue."