Mount Wittenberg Orca is an EP by American indie rock band Dirty Projectors and Icelandic singer and songwriter Björk, released on June 30, 2010, in digital-only format and on CD and vinyl by Domino Records on 24 October 2011.

"[4] On March 26, 2009, Brandon Stosuy of Stereogum announced that Björk and Dirty Projectors were joining forces for a one-time benefit show at Housing Works Bookstore & Café in Manhattan.

[6] The night began with acoustic renditions of songs from Dirty Projectors' previous album, Bitte Orca before lead singer Longstreth introduced the material he composed especially for the evening, announcing, “We’ve never played it in front of anyone before, and we are just incredibly honored to sing this music with Björk.

"[6] The six song cycle recounts the moment band member Amber Coffman made eye contact with a whale on the northern California coast, near Mount Wittenberg.

[8] The money raised from the self released digital EP was donated to the National Geographic Society Oceans Initiatives, which helps create international marine protected areas.

[15] Tiny Mix Tapes praised the minimalist direction of the EP and highlighted the vocal talents of Dirty Projectors' Amber Coffman in addition to the acute environmental awareness of the lyrics.