Old Yellow Moon is a collaborative album by American country music singer-songerwriters Emmylou Harris and Rodney Crowell, released on February 26, 2013 in the United States by Nonesuch Records.

In the liner notes of Harris' 2007 Songbird: Rare Tracks and Forgotten Gems box set she writes that "we've been talking for 34 years about doing a duet record, and I swear we're going to do it.

The song became the opening number for Harris's 1975 Pieces of the Sky album and has been re-recorded for Old Yellow Moon with slightly altered lyrics and, for a change, Rodney Crowell singing lead.

In addition, Emmylou Harris has recorded roughly 20 Crowell-composed songs over the years, such as "I Ain't Living Long Like This", "Leaving Louisiana in the Broad Daylight" and "Till I Gain Control Again".

Emmylou returned the favor and can be heard prominently as backing vocalist and musician on Crowell's debut LP Ain't Living Long Like This, released in 1978.