Dennis Duigan should not be confused with Dennis Dugan.
| Dennis Duigan | |
| Full Name: | Dennistoun Vaughan Duigan |
| Nationality: | Australian |
| Sport: | Athletics |
| Event: | Decathlon |
| Birth Date: | 16 December 1902 |
| Birth Place: | Elwood, Victoria, Australia |
| Death Place: | Sunnybank, Queensland, Australia |
Dennistoun Vaughan Duigan (16 December 1902 - 17 June 1962) was an Australian athlete.[1] He competed in the men's decathlon at the 1924 Summer Olympics. He was born in Elwood, a suburb of Melbourne, Victoria.[2]