Benjamin S. Campbell (July 27, 1858 – March 19, 1942) was an attorney and a mayor of Houston, Texas.

He worked for local government, first as the Walker County Attorney and then as prosecutor for the Twelfth Judicial District of Texas.

He implemented reforms for city employees, including limiting hours of work.

During his administration, Houston provided free textbooks for school children starting in 1913.

Ceremonies took place at the Turning Basin, where lame duck Governor Oscar Colquitt and other Texas dignitaries watched the mayor's daughter christen the newly dredged channel with rose petals.