The Republic of Baüme, officially known as the Nationalist Republic of Baüme, is a military microstate located in North America, encompassing a land area of approximately 179 owned yards, or 0.1 claimed square miles. It is the largest microstate within the state of Montana and serves as the seat of power for the Supreme Government of the Guccist Party, led by Jameson Guccione and Aiden McLain.

The nationalist government exercises strict control over six diverse oblasts (regions), as well as in the United States, uniting militia organizations under the Guccist Party while ruling with a highly militarized and centralized authority. A key pillar of the state is its army, commanded by Bryant Martin. Baüme is surrounded by the United States of America, with its nearest foreign border, Alberta, Canada, located roughly 330 miles away.