Lim Rock, also known as Limrock, Lime Rock, Boyds Switch, or Boyd Switch, is an unincorporated community in southern Jackson County, Alabama, United States.

It is located on Alabama State Route 35 halfway between Scottsboro and Woodville.

The community was originally named Boyd Switch in honor of local merchant John Boyd and was a stop on the Southern Railway.

The name was then changed to Lim Rock after a local citizen made a contribution to the Methodist church with the stipulation that the community name be changed.

This Jackson County, Alabama state location article is a stub.