Newcom Tavern, also known as the "Old Cabin", is a historic structure in Dayton, Ohio and is the city's oldest existing building. It was built in 1796 for Colonel George Newcom and his wife Mary, who ran it as a tavern and hostel. The building passed through several owners, and its historical significance was forgotten until planned construction revealed the original log structure. The building was moved twice and now located in Dayton's Carillon Historical Park and operated as a museum.