Ultimatum is an EP by indie rock band The Long Winters.

The band's line-up on Ultimatum varies from the line-ups featured on the band's previous two LPs, The Worst You Can Do Is Harm and When I Pretend to Fall.

While John Roderick and Eric Corson remain on guitar/vocals and bass/vocals respectively, Mike Squires has been added as an additional guitarist and keyboardist, and Nabil Ayers is the band's latest percussionist.

Matt Chamberlain played drums on "The Commander Thinks Aloud".

[1] "The Commander Thinks Aloud" appeared as a remix on MoveOn.org's Future Soundtrack for America compilation in 2004.