Sizzler is a United States-based restaurant chain with headquarters in Mission Viejo, California with locations mainly in California plus some in the adjacent states of Washington, Arizona, New Mexico, Idaho, Utah, and Oregon. It is known for steak, seafood, and salad bar items.\nSince 2011, Sizzler restaurants outside of the United States are currently owned by Australia-based Collins Foods, doing business as Sizzler International, and are not related to the American firm.