Dennett
Dennett is a surname. Notable people with the surname include:

 Daniel Dennett (born 1942), American philosopher, writer, and cognitive scientist
 Fred Dennett (1863–1928), American politician
 Fred A. Dennett (1849–1920), American politician
 Edward George Dennett (1879–1937), English cricketer
 Lydia Neal Dennett (1798–1881), American abolitionist and suffragist
 Mary Dennett (1872–1947), American birth control activist
 R. E. Dennett, English trader and author
Russell Dennett, British musician (The Human League)
Tyler Dennett (1883–1949), American historian