Grubb is a family name and may refer to the following:
Catharina Elisabet Grubb (1721–1788), Finnish industrialist
Curtis Grubb (c. 1730 – 1789), American patriot and politician, majority owner and operator of the Cornwall Iron Works, son of Peter Grubb, the Works' founder
Dale Grubb, member of the Indiana House of Representatives
Davis Grubb (1919–1980), American writer
Edward Grubb (Quaker) (1854–1939), English Quaker
Edward Burd Grubb, Jr. (1841–1913), American Civil War commander, businessman and politician
Evelyn Grubb, American human rights and veterans' rights activist
Freddie Grubb (1887–1949), British road racing cyclist and businessman
George Grubb, Lord Provost and ex officio Lord-Lieutenant of Edinburgh
Gunnila Grubb (1692–1729), was a Swedish composer
Henry Bates Grubb (1774–1823), founder of the Grubb iron empire, son of Peter Grubb, Jr.
Howard Grubb (1844–1931), Irish telescope maker
Ignatius Cooper Grubb (1841–1927), American politician, jurist and historian
James Grubb (1771–1806), American politician
Jeff Grubb (born 1957), author and game designer
Jehu Grubb (c. 1781 – 1854), American settler and member of the Ohio House of Representatives, unacknowledged son of Curtis Grubb
Jennifer Grubb, American professional soccer player and coach
John Grubb (1652–1708), early Delaware settler and member of the Pennsylvania Provincial Assembly
Johnny Grubb (born 1948), former Major League Baseball player
Kenneth Philip Grubb (1895-1976), United State District Court judge
Kevin Grubb (1978–2009), NASCAR driver
Margaret Grubb (1907–1963), first wife of Scientology founder L. Ron Hubbard
Nathaniel Grubb (c. 1693 – 1760), mill owner and member of the Pennsylvania Colonial Assembly from 1749 to 1758
Norman Grubb (1895–1993), missionary and General Secretary of the Worldwide Evangelization Crusade
Peter Grubb (mason) (c. 1702 – 1754), founder of the Cornwall Iron Works and builder of the Cornwall Furnace in colonial Pennsylvania
Peter Grubb, Jr. (1740–1786), American patriot, operator of the Cornwall Iron Works, and son of the above Peter Grubb
Peter Grubb (zoologist) (1942–2006), British zoologist
Peter J. Grubb (born 1936), British ecologist
Robert Grubb (born 1950), Australian actor
Sarah Pim Grubb (1746–1832), Irish businesswoman and Quaker benefactor
Thomas Grubb (1800–1878), Irish optician
Warner Norton Grubb (1900–1947), American petroleum executive and senior petroleum distribution officer with the U.S. Navy during World War II
Wayne Grubb (born 1976), former NASCAR driver
William Irwin Grubb (1862–1935), U.S. federal judge who struck down key portions of President Roosevelt’s New Deal
A family of hobbits in J.R.R. Tolkien's fictional Middle-Earth
