Howlett is a surname. Notable people with the surname include:
Barbara Howlett, Australian fungal plant pathologist
David J. Howlett, American scholar of religion and contributor to Mormonism: A Historical Encyclopedia
Doug Howlett, NZ rugby player
Elizabeth Howlett, British politician
Eric Howlett, American inventor
Gary Howlett, Irish international footballer
Gordon Howlett Dean, Canadian politician
Jack Howlett, British mathematician and computer scientist
Jeffrey Howlett, Australian architect
Liam Howlett, British musician with The Prodigy
Michael Howlett, American politician
Mike Howlett, British musician and producer
Phil Howlett, Tongan rugby league player
Robert Howlett (1831-1858), British photographer
Roger Howlett (born 1948), English cricketer
Virginia Howlett, Canadian designer and painter
