A British blues band founded in late 1963, which toured extensively in the 1960s and continued in existence for a number of decades. They remain one of the lesser known, yet critically regarded bands of the late 1960s and early 1970s blues rock groups.

The Groundhogs were formed in New Cross, London in 1963 by Tony McPhee, who named them after a John Lee Hooker track.

In 1964, they signed a recording contract and released their debut single, Shake It, in 1965.

The line-up for their first album, Scratchin' the Surface, released in 1968, consisted of Tony McPhee as vocalist and guitarist, Peter Cruickshank, Ken Pustelnik on drums and Steve Rye on harmonica. Clive Brooks became the drummer in 1972.

Particularly in their formative years, the Groundhogs toured extensively with John Lee Hooker and Champion Jack Dupree. Later album releases such as Thank Christ For The Bomb (1970), Split (1971) and Who Will Save the World? The Mighty Groundhogs (1972), are powerful rock albums, with lead guitar work from their long term frontman, McPhee. Some further exposure came from serving as the supporting act for the Rolling Stones UK tour in 1971.

Originally broken up in 1976, they came back as a largely live act less than a decade later.

After years of performing and recording for a loyal cult audience, McPhee left the band in 2004 in order to perform acoustically, leaving fellow original members Cruickshank and Pustelnik to carry on as The Groundhogs Rhythm Section. This line up has recently been augmented by a new frontman, Eddie Martin, who will continue the psychedelic/blues/rock style Groundhogs fans are familiar with.

McPhee has put together a new band in 2007 to be known as Tony McPhee's Groundhogs, with Dave Anderson playing bass and Marco Anderson on drums.