David Fitzsimons (23 April 1950 – 7 September 2008) was a former Australian Olympic athlete who competed in middle distance events and civil engineer. A member of the Adelaide University Athletics Club, he represented Australia at two Olympic Games and two Commonwealth Games during his career. Inducted into the South Australian Athletics Hall of Fame in 2000. Fitzsimons won eight Australian Championships in Athletics over 5000 metres and 10000 metres including the 5k/10k double on three occasions.