The Mesa Historical Museum is a historical museum in Mesa, Arizona, United States. It was opened in 1987 by the Mesa Historical Society to preserve the history of Mesa, Arizona.
The museum's exhibits include a comprehensive history of Mesa, a replica of an early adobe one-room schoolhouse, as well as additional galleries of changing exhibits. The museum also maintains a large collection of historic agricultural equipment.
The museum buildings are in fact the museum's largest artifacts. The main museum building was built in 1913-1914 for use as the Lehi School in what was then Lehi, Arizona. The auditorium was built in the 1930s as a Works Progress Administration project. The two-building complex was added to the National Register of Historic Places in 2001 as the "Lehi School".
In 2008, the museum began developing a popular exhibit about Spring Training (baseball) in Arizona, called "Play Ball: The Cactus League Experience." The exhibition has since expanded to locations throughout Maricopa County.