"Sorrow" is a song written by Brett Gurewitz and performed by Bad Religion. It was the first single to be released from their twelfth studio album, The Process of Belief, which was released in 2002, although the single was first played in the fall of 2001 by the L.A. radio station KROQ.

The band Switchfoot has covered this song many times while on tour and the song has been released as downloadable content in the video games Rock Band and Rock Band 2.

Bad Religion is an American punk rock band founded in Southern California in 1980 by Jay Bentley (bass), Greg Graffin (vocals), Brett Gurewitz (guitars), and Jay Ziskrout (drums). They are often credited for being involved in the revival of punk rock and inspiring several subsequent punk bands during the late 1980s, as well as influencing a large number of other punk and rock musicians throughout their career.