The Age of Steam Roundhouse Museum, located in Sugarcreek, Ohio, United States, is a museum roundhouse housing steam and diesel locomotives, passenger cars and other vintage United States and Canadian railroad equipment.

The roundhouse was built by Jerry Joe Jacobson, former CEO of the Ohio Central Railroad System (OCRS).

In October 2008, Jacobson sold his interest in OCRS to Genesee & Wyoming, including the track, modern equipment, and most of the workshops and depots.

[2] As of 2012, the Age of Steam Roundhouse's website outlines its goals as: The project was paid for by Jacobson and his wife, Laura.

[2][4] Architect F. A. Goodman says the building is 48,000 square feet and of "solid masonry walls" and "heavy timber framing".