The Cowell Lime Works, in Santa Cruz, California, was a manufacturing complex that quarried limestone, produced lime and other limestone products, and manufactured wood barrels for transporting the finished lime. Part of its area is preserved as the Cowell Lime Works Historic District, which was listed on the National Register of Historic Places in 2007. In addition to the four lime kilns, cooperage and other features relating to lime manufacture, the Historic District also includes other structures associated with the Cowell Ranch, including barns, a blacksmith shop, ranch house, cook house and workers' cabins. The 32-acre Historic District is located within the University of California, Santa Cruz campus, to either side of the main campus entrance.
The site gets its name from the Cowell family, which owned and operated the lime works, quarries, ranch and large tracts of surrounding timber lands. Industrialist Henry Cowell acquired the ranch and the lime works in the late 19th century.