Joseph Samuel Clark (June 7, 1871 – November 3, 1944) was an African-American academic administrator who spent most of his career in Louisiana. He was the head of Baton Rouge College and president of Southern University and A&M College, both historically black colleges, where he served in total from 1901 to 1938. During the years from 1914 to 1938 he led the development of Southern, designated as a land grant college in 1890 and moved to the Baton Rouge area in 1914.