| Alex Serdyukov | |
| Other Names: | The Russian Crusher |
| Birth Date: | 24 May 1980 |
| Birth Place: | Moscow, Russian SFSR, Soviet Union |
| Nationality: | Russian |
| Weight: | 171lb |
| Weight Class: | Welterweight |
| Fighting Out Of: | San Francisco, California, United States |
| Team: | Fairtex Gym |
| Mma Kowin: | 3 |
| Mma Subwin: | 4 |
| Mma Decwin: | 1 |
| Mma Koloss: | 1 |
| Mma Subloss: | 2 |
| Mma Decloss: | 2 |
| Sherdog: | 7441 |
Alex Serdyukov (born May 24, 1980) is a retired Russian mixed martial artist who competed in the Welterweight division. A professional from 2003 until 2009, he competed for the WEC and Palace Fighting Championship.
|-| Loss| align=center| 8–5| Johny Hendricks| Decision (unanimous)| WEC 39| | align=center| 3| align=center| 5:00| Corpus Christi, Texas, United States||-| Win| align=center| 8–4| Luis Santos| TKO (corner stoppage)| WEC 34: Faber vs. Pulver| | align=center| 1| align=center| 5:00| Sacramento, California, United States| |-| Win| align=center| 7–4| Ryan Stonitsch| Submission (triangle choke)| WEC 33: Marshall vs. Stann| | align=center| 1| align=center| 1:15| Las Vegas, Nevada, United States| |-| Win| align=center| 6–4| Mike Gates| TKO (punches)| PFC 6: No Retreat, No Surrender| | align=center| 2| align=center| 2:05| Lemoore, California, United States| |-| Loss| align=center| 5–4| John Alessio| Submission (guillotine choke)| WEC 28| | align=center| 1| align=center| 1:17| Las Vegas, Nevada, United States| |-| Win| align=center| 5–3| Scott Norton| Submission (guillotine choke)| WEC 26: Condit vs. Alessio| | align=center| 2| align=center| 0:57| Las Vegas, Nevada, United States| |-| Loss| align=center| 4–3| John Alessio| Submission (rear-naked choke)| WEC 23: Hot August Fights| | align=center| 3| align=center| 1:52| Lemoore, California, United States| |-| Loss| align=center| 4–2| Brian Ebersole| Decision (unanimous)| ICFO 1: Stockton| | align=center| 3| align=center| 5:00| Stockton, California, United States| |-| Win| align=center| 4–1| Victor Parfenov| TKO (punches)| WEC 16| | align=center| 1| align=center| 2:20| Lemoore, California, United States| [1] |-| Win| align=center| 3–1| Mark Weir| Submission (arm-triangle choke) | WEC 14| | align=center| 3| align=center| 2:56| Lemoore, California, United States| |-| Loss| align=center| 2–1| Jon Fitch| TKO (punches)| MMA Mexico: Day 1| | align=center| 2| align=center| 2:15| Juarez, Mexico| |-| Win| align=center| 2–0| Miguel Gutierrez| Decision (unanimous)| MMA Mexico: Day 1| | align=center| 3| align=center| 5:00| Juarez, Mexico| |-| Win| align=center| 1–0| Harris Sarmiento| Submission (kimura) | KFC 2: Kaos Fighting Championships 2| | align=center| 1| align=center| N/A| Honolulu, Hawaii, United States|