Magna Carta is a progressive rock group originally formed in London in April 1969; their first concert was on 10 May 1969, by Chris Simpson (guitar, vocals), Lyell Tranter (guitar, vocals), and Glen Stuart (vocals).

The trio released albums for Fontana Records and Vertigo Records, enjoying particular success with 1970's Seasons before Tranter returned to Australia. Davey Johnstone joined the line-up as his replacement, recording Songs From Wasties Orchard and In Concert with the band before leaving to work with Elton John, with whom he is still playing.