Jack Bushnell Hanna is a retired American zookeeper and a former director emeritus of the Columbus Zoo and Aquarium. "Jungle Jack" was director of the zoo from 1978 to 1992, and is viewed as largely responsible for elevating its quality and reputation. His media appearances, particularly with David Letterman, James Corden, Good Morning America, and Maury Povich have made him one of the most notable animal experts in the United States. A 2021 documentary, The Conservation Game, alleged that Hanna participated in the mistreatment and private trade of exotic and endangered animals.

The Columbus Zoo and Aquarium is a non-profit zoo located near Powell in Liberty Township, Delaware County, Ohio, United States, north of the city of Columbus. The land lies along the eastern banks of the O'Shaughnessy Reservoir on the Scioto River, at the intersection of Riverside Drive and Powell Road. It has a worldwide reputation, largely attributable to the efforts and promotion of director emeritus Jack Hanna. In 2009, it was named by the USA Travel Guide as the number one zoo in the United States. It was also ranked number one best zoo in 2012 by Besties Readers Choice.