Built to Spill Caustic Resin is a split EP released by indie rock bands Built to Spill and Caustic Resin.

The album attributes songwriting credits for the first two tracks to Built to Spill, the third to Caustic Resin and the last to Tae Won Yu from his time in the band Kicking Giant.

Built to Spill's Brett Netson is listed as performing guitar and vocals on Caustic Resin's track "Shit Brown Eyes", while Caustic Resin's Todd Dunnigan is listed as playing organ on "When Not Being Stupid Is Not Enough" and Moog on "One Thing", both songs by Built to Spill.

The album was originally released with a cover featuring a photo of newly hatched fish larva and eggs,[1] which had been found in a trash can.

[citation needed] The album is Up Records release UP018.