Marcus Smith may refer to: Marcus A. Smith (1851–1924), United States Senator from Arizona Marcus Smith (defensive lineman, born 1984), American football defensive tackle Marcus Smith II (born 1992), American football defensive end Marcus Smith (wide receiver) (born 1985), American football wide receiver Marcus Smith (rugby player) (born 1999), English rugby union player Marcus C. Smith (1825–1900), American politician in Indiana Marcus G. Smith (born 1973), president and chief operating officer and director of NASCAR track owner Speedway Motorports, Inc.