Grabham is a surname. It may refer to:
Anthony Grabham (1930–2015), British surgeon George Wallington Grabham (1836–1912), New Zealand doctor Mick Grabham, guitarist of Procol Harum 1972–1977 Oxley Grabham (1864–1939), British naturalist, ornithologist, and museum curator Tom Grabham (born 1991), Welsh rugby player