Denvir is a surname. Notable people with the surname include:
The Most Reverend Cornelius Denvir DD (1791–1865), Irish Roman Catholic prelate, mathematician, and natural philosopher John Denvir (American football) (born John William Denvir), American football player John Denvir (soldier) DCM (1913–1973), New Zealand soldier Kieran Denvir (1932–2022), Gaelic footballer from Northern Ireland Tim Denvir (born 1939), British software engineer
See also Laura Denvir Stith (born 1953), American judge on the Supreme Court of Missouri