Otis Samuel Johnson (born 1942) is an American social worker, educator and politician from the U.S. state of Georgia who served as the Mayor of Savannah from 2004 until 2012.

[1] Before becoming mayor, Johnson worked for the Economic Opportunity Authority, Model Cities Program, and Savannah State University.

In November 2003, Johnson was elected to a four-year term as Mayor of Savannah against two-term Alderman Pete Liakakis (Democrat), and four other candidates.

Johnson stressed that criminal acts in Savannah were often perpetrated by young African American males on their own community, and he called a series of well-attended town meetings to address the problem.

While campaigning, Johnson announced that Savannah had been declared a Preserve America city by the U. S. Department of Housing and Urban Development.