Baron Gretton, of Stapleford in the County of Leicester, is a title in the Peerage of the United Kingdom. It was created in 1944 for the brewer and Conservative politician John Gretton. He was head of the brewery firm of Bass, Ratcliff & Gretton Ltd of Burton upon Trent and also represented Derbyshire South, Rutland and Burton in Parliament. His son, the second Baron, also represented Burton in the House of Commons as a Conservative. As of 2017[update] the title is held by the latter's grandson, the fourth Baron, who succeeded his father in 1989. His mother, Jennifer Gretton, Lady Gretton, was Lord Lieutenant of Leicestershire between 2003 and 2018.
Barons Gretton (1944)
- John Gretton, 1st Baron Gretton (1867–1947)
- John Frederic Gretton, 2nd Baron Gretton (1902–1982)
- John Henrik Gretton, 3rd Baron Gretton (1941–1989)
- John Lysander Gretton, 4th Baron Gretton (b. 1975)
The heir apparent is the present holder's son the Hon. John Frederick Bruce Gretton. (b. 2008)
- London Gazette no. 36352. p. 541