Deadheads for Obama is the name given to the February 4, 2008 reunion concert of three former members of the Grateful Dead at The Warfield in San Francisco. The show, performed one day before the Super Tuesday primary elections, was an act of support for Democratic presidential candidate Barack Obama, and featured former Dead members Phil Lesh, Bob Weir, and Mickey Hart, as well as John Molo, Jackie Greene, Steve Molitz, Mark Karan and Barry Sless.

Grateful Dead was an American rock band formed in 1965 in Palo Alto, California. The band is known for its eclectic style, which fused elements of rock, blues, jazz, folk, country, bluegrass, rock and roll, gospel, reggae, and world music with psychedelia, the improvisation of their live performances, and its devoted fan base, known as "Deadheads". According to the musician and writer Lenny Kaye, the band's music "touches on ground that most other groups don't even know exists." For the range of their influences and the structure of their live performances, Grateful Dead are considered "the pioneering godfathers of the jam band world".