| WEC 17: Halloween Fury 4 | |
| Promotion: | World Extreme Cagefighting |
| Date: | October 14, 2005 |
| Venue: | Tachi Palace Hotel & Casino |
| Previousevent: | WEC 16: Clash of the Titans 2 |
| Followingevent: | WEC 18: Unfinished Business |
WEC 17: Halloween Fury 4 was a mixed martial arts event promoted by World Extreme Cagefighting on October 14, 2005, at the Tachi Palace Hotel & Casino in Lemoore, California.[1] A light heavyweight tournament was held with the winner being crowned the champion and given a deal with the UFC.[2]
1Justin Levens was forced to withdraw due to a shoulder injury. He was replaced by Vernon White.
2Vernon White was forced to withdraw due to a hand injury. He was replaced by Tait Fletcher.[2]