Duncombe can refer to
- People
- John Duncombe (1622–1687), English politician
- Sir Charles Duncombe (c. 1648–1711), English politician
- William Duncombe (1690–1769), British writer
- John Duncombe (1729–1786), British writer
- William Duncombe (1737 or 38–1818 or 19), British composer
- Dr. Charles Duncombe (1792–1867), leader in the Upper Canada Rebellion
- Thomas Slingsby Duncombe (1796–1861), British MP
- Jasper Duncombe, 7th Baron Feversham (1968–), British adult film producer
- Nick Duncombe (1982–2003), English rugby union footballer
- Baron Feversham, family name of holders of this title
- Cities
- Duncombe, Iowa, United States
- Duncombe, Lancashire, England