Gustavus

Gustavus may refer to:
 * Gustavus, Alaska, a small community located on the edge of Glacier Bay National Park and Preserve
 * Gustavus Adolphus College, a private liberal arts college in southern Minnesota
 * Gustavus (name), a given name
 * Gustavus, the Latin name given to several Swedish kings:
 * Gustav I of Sweden (Gustav Vasa)
 * Gustavus Adolphus of Sweden (Gustav II Adolf)
 * Gustav III of Sweden
 * Gustav IV Adolf of Sweden
 * Gustaf V of Sweden (1858-1950)
 * Gustaf VI Adolf of Sweden (1882-1973)
 * Operation Gustavus, World War II British commando operation in Malaya
 * Gustavus (horse)