Louis Charles Gillis Sr. (August 8, 1924 – February 3, 2005), nicknamed "Sea Boy", was an American Negro league catcher from 1946 to 1952.

A native of Birmingham, Alabama, Gillis graduated from A. H. Parker High School, and served in the US Marine Corps in World War II.

[1] He broke into the Negro leagues in 1946 with the Atlanta Black Crackers, and later played for the Birmingham Black Barons.

Gillis died in Birmingham in 2005 at age 80.

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