Dummer is a surname of Old English origin. It means those from Dummer, Hampshire.
Notables with this name include
Edmund Dummer, several people
Elias Dummer (born 1983), Canadian musician
Ethel Sturges Dummer (1866–1954), American writer
Geoffrey Dummer (1909–2002), British electronics author and consultant
George Dummer (1782-1853), American businessman
Jeremiah Dummer (silversmith) (1643–1718), American silversmith
Jeremiah Dummer (1681–1739), important colonial figure in New England who helped establish Yale College Phineas C. Dummer (1787–1875), sixth mayor of Jersey City, New Jersey, United States Richard Dummer (1589–1679), early settler in New England Richard Arnold Dümmer (1887–1922), South African botanist Shubael Dummer (1636–1692), early settler in New England murdered in Candlemas Massacre at York, Maine in 1692 Thomas Lee Dummer (1712–1765), English Member of Parliament for Southampton (1737–1741) and Newport (Isle of Wight) (1747–1765) Thomas Dummer (1739–1781), English Member of Parliament for Newport (Isle of Wight) (1765–1768), Yarmouth (1769–1774), Downton (1774), Wendover (1775–1780) and Lymington (1780–1781); son of Thomas Lee Dummer William Dummer, several people