Gretton may refer to:
- Placenames
- Gretton, Gloucestershire, England
- Gretton, Northamptonshire, England
- formerly main settlement of Gretton Rural District and location of Gretton railway station
- Gretton, Shropshire, England
- People
- Baron Gretton, a title in the Peerage of the United Kingdom
- George Gretton, (b.1950), Scottish lawyer and academic
- Jennifer Gretton, Baroness Gretton, (b.1943), Local digntary in Leicestershire, England
- Peter Gretton, (1912-1992), Admiral in the Royal Navy
- Rob Gretton, (1953-1999), Musicians' manager
- William Gretton, (1736-1813), a master of Magdalene College, Cambridge.