Steve Dennis Timmons (born November 29, 1958) is an American former volleyball player who represented the United States at three consecutive Summer Olympics, winning a gold medal in 1984 and 1988, and a bronze medal in 1992. He was named the MVP of the 1984 Olympics by the International Volleyball Federation. He was a pioneer of back row hitting.

Timmons was teammates with Karch Kiraly on the national team at the 1985 FIVB World Cup, the 1986 FIVB World Championship, and the 1987 Pan American Games, winning gold medals in each of these events.

Timmons was inducted into the International Volleyball Hall of Fame in 1998.

Timmons played volleyball and basketball at Newport Harbor High School in Newport Beach, California. He started to play volleyball in his junior year.

Timmons attended Orange Coast College (OCC), playing for the Pirates basketball team that won the California Community College Athletic Association (CCCAA) state championship, and the Pirates volleyball team that was runner-up in the state championship.

Timmons then attended the University of Southern California, playing for the Trojans volleyball team that won the 1980 NCAA men's volleyball tournament, and was selected to the All-Tournament Team. He was selected as an All-American in 1980 and 1981.

Timmons played with Kiraly in the Italian league team Porto Ravenna Volley, known then as "il Messaggero", where they won the Italian Volleyball League division title in 1991 and the CEV Champions League title in 1992.

Timmons played professional beach volleyball from 1989 to 1994. He won a tournament in Enoshima, Japan with Kiraly as his partner in 1989.