Ah-Tah-Thi-Ki is a museum of Seminole culture and history, located on the Big Cypress Indian Reservation in Hendry County, Florida. The museum is owned and operated by the Seminole Tribe of Florida. The museum itself was named in a Seminole language phrase: Ah-Tah-Thi-Ki, which means "a place to learn, a place to remember". The museum opened in 1997. It has been designated a Smithsonian Institution Affiliate.