The Dayton Arcade is a collection of nine buildings in Dayton, Ohio. The Arcade is a historic, architecturally elegant complex in the heart of Dayton's central business district. Built between 1902 and 1904, it was conceived by Eugene J. Barney of the Barney & Smith Car Company and consists of nine interconnecting buildings topped by a glass-domed rotunda, 70 feet (21 m) high and 90 feet (27 m) in diameter, below which two balconied upper floors circle the central enclave. As president of the Arcade Company, Barney made sure the Arcade had the latest innovations, including elevators, a power plant and a cold-storage plant. The architect was Frank M. Andrews, known also as architect for many of NCR's factory buildings and the American Building at Third and Main Streets in Dayton.

Dayton is a city in and the county seat of Montgomery County, Ohio, United States. A small part of the city extends into Greene County. As of the 2020 census, the city proper had a population of 137,644, making it the sixth-most populous city in Ohio. It anchors the state's fourth-largest metropolitan area, the Dayton metropolitan area, which had 814,049 residents. Dayton is located within Ohio's Miami Valley region, 50 miles (80 km) north of Cincinnati and 60 miles (97 km) west of Columbus.