Tevis Clyde Smith, Jr. (1908–1984) was an American historian, fantasy writer, poet and amateur publisher, best known for his association with Robert E. Howard. Most of his writing appeared as by Tevis Clyde Smith; he also wrote as T. C. Smith, Jr., and under his full name, Tevis Clyde Smith, Jr. He lived in Brownwood, Brown County, Texas.
Smith self-published several chapbooks on the history, biography and genealogy of Brown County, Texas, and others of his poetry and short fiction. As a young man he collaborated on three short stories with Robert E. Howard. Late writings focused on his association with Howard.
Smith met Robert E. Howard while both attended Brownwood High School and they remained friends until Howard's death. At the time, Smith was publishing a small amateur journal. He and Howard collaborated on a story that was meant to run in Smith's magazine, Under the Great Tiger, though they abandoned the project. Smith did other collaborations with Howard, one of which they sold to the magazine Oriental Stories. Several of their collaborations were collected in Red Blades of Black Cathay, published by Donald M. Grant, Publisher, Inc. in 1971.