Don't You Know Who I Think I Was? is a greatest hits album by the American rock band The Replacements, released in 2006 by Rhino Records. It includes eighteen tracks spanning the band's eight studio releases from 1981 to 1990, as well as two new tracks recorded specifically for this release. The new tracks—"Message to the Boys" and "Pool & Dive"—feature the three surviving original band members: singer and guitarist Paul Westerberg, bass guitarist Tommy Stinson, and drummer Chris Mars. However, Mars does not play drums on these tracks: they were played by session drummer Josh Freese while Mars sang backing vocals.
The album art is from the music video for "Alex Chilton". Westerberg stated in a 2006 interview with Newsweek that he had written "Message to the Boys" many years ago.