Hagler is a surname. Notable people with the surname include:
People with surname or given name Lyle Hagler Boren (1909–1992), American politician Collins Hagler (born 1935), Canadian football player Ellis Hagler (1908–1990), American football player and coach King Hagler (c. 1700 – 1763), leader of the Catawba Indian Nation Louise Hagler, author of The Farm Vegetarian Cookbook Marvin Hagler (1954–2021), American boxer Sherry Hagler, keyboardist for Birtha Steve Hagler, guitarist for Starcastle Tyjuan Hagler (born 1981), American football linebacker
Places Hagler, Ohio Hagler-Cole Cabin Hagler Field, previous name for Pensacola International Airport William Hagler House
Other Freddie Norwood (born 1970), boxer known as "Lil Hagler" Waldman-Hagler rules, a combining rule