Dennis Ivan Vinzant (August 23, 1906 – June 22, 1976) was an American football, basketball, and baseball. He served as the head basketball coach at East Texas State Teachers College—now known a Texas A&M University–Commerce—from 1936 to 1946 and Midwestern University—now known as Midwestern State University—in Wichita Falls, Texas from 1956 to 1970, compiling a career college basketball coaching record of 351–214. Vinzant was also the head football coach at East Texas State in 1942, tallying a mark of 4–3–1, and the head baseball coach at Tulane University from 1952 to 1954, amassing a record of 37–22–1.