The Ides of March is an American rock band that had a major US and minor UK hit with the song "Vehicle" in 1970. After going on hiatus in 1973, the band returned with their original line-up in 1990 and has been active since then.

Having secured a recording contract with Warner Bros. Records, in 1970 the band released the track "Vehicle," which at the time became the fastest selling single in Warner's history.Fourteen seconds of the completed "Vehicle" master tape (primarily the guitar solo) was accidentally erased in the recording studio. The missing section was spliced in from a previously discarded take.

The song reached #2 on the Hot 100 and #6 on the corresponding Cash Box listings. It sold over one million copies, and was awarded a gold disc in November 1972. The following album, Vehicle, reached #55 nationally.

The band toured extensively throughout 1970 in support of many top acts, including Jimi Hendrix, Janis Joplin, and Led Zeppelin. The Ides of March were also among the participants in the "Festival Express" train tour documented in a 2003 film, although they were not featured in the film.

In 1971, the band released their second album Common Bond. The featured single was "L.A. Goodbye". The song was at #1 on regional charts for five weeks, #2 on WCFL Chicago, #5 on WLS Chicago, but only #73 on the Hot 100.

In 1972, the band moved to RCA Records and released World Woven. At this point, the band departed from the "brass" sound (though one song featured a single trumpet) and the album produced no hit singles. In 1973, the Midnight Oil album was released. The band played its final show of their "first era" at Morton West High School in Berwyn that November.