Withlacoochee Rockhounds is a nonprofit organization based in Hernando County, Florida, dedicated to fostering interest in and knowledge of minerals, gems, fossils, and earth sciences. The club is affiliated with the Southeast Federation of Mineralogical Societies and the American Federation of Mineralogical Societies, and welcomes people interested in geology, mineralogy, gemology, paleontology, and jewelry making.

Members and visitors can take part in regular meetings featuring guest speakers, videos, slide shows, demonstrations, classes, and informational programs. The club also organizes field trips, rock swaps, auctions, an annual dinner meeting, and an annual gem and mineral show. Its practical workshops cover rock, mineral, and fossil identification, as well as rock cutting, grinding, polishing, cabbing, silversmithing, wire wrapping, chain making, and jewelry making. The organization shares club news through newsletters and provides information about events, membership, and club activities. Meetings are held at its clubhouse in Spring Hill, and people can learn about joining online.