Jack Bushnell Hanna (born January 2, 1947) is an American retired zookeeper and director emeritus of the Columbus Zoo and Aquarium.

His media appearances, particularly with David Letterman, James Corden, Good Morning America, and Maury Povich made him one of the most notable animal experts in the United States.

[2] He majored in business and political science at Muskingum College in New Concord, Ohio, where he got in trouble for keeping ducks in his dorm room and a donkey in a shed behind his fraternity house (The M.A.C.E.

Over the course of Hanna's tenure as director, the zoo made the transition from cage-like enclosures to habitat environments, and the grounds were significantly expanded.

Hanna also occasionally contributed commentary as an animal expert on various local and national news programs, and has done guest spots on other shows such as Larry King Live, Nancy Grace, Maury, and The Hollywood Squares.

[8] Hanna also appeared in Neal McCoy's 2005 music video for "Billy's Got His Beer Goggles On" with a hyacinth macaw, a sloth and an albino burmese python.

He provided police assistance with expertise in tracking down the animals, which included lions, leopards, wolves, primates, bears, and eighteen tigers.

[6] In May 2018 at the Los Angeles Zoo's annual Beastly Ball, Hanna received the Tom Mankiewicz Leadership Award for his work in conservation.

[22] “The film advocates for the passage of the Big Cat Public Safety Act now being considered in Congress,” a Zoo statement read.

“The Columbus Zoo and Aquarium shares and applauds this goal.”[23] Hanna's family released a statement saying they had not seen the documentary, could not speak for him, and could not consult him on the matter due to the effects of his dementia.