The Lorin district is a neighborhood located in the southern part of Berkeley, California, bounded by Ashby Avenue, Adeline Street, Martin Luther King Jr. Way, Sacramento Street, and 62nd Street.

It was formerly the unincorporated town or settlement of Lorin, the last stop before Berkeley along the Berkeley Branch line of the Central Pacific (later, Southern Pacific). In the early 1900s, the people of Lorin elected to be annexed to the City of Berkeley, and the name vanished from use. The area is today mostly referred to as "South Berkeley".

Lorin is mentioned and is the setting for one scene in former University of California student Frank Norris' book The Octopus.