| Todd Bjornethun | |
| Birth Place: | United States |
| Nationality: | American |
| Weight: | 185lb |
| Weight Class: | Heavyweight Middleweight |
| Fighting Out Of: | Kirkland, Washington, United States |
| Years Active: | 1994 - 1997 |
| Mma Kowin: | 2 |
| Mma Subwin: | 3 |
| Mma Decwin: | 2 |
| Mma Subloss: | 5 |
| Sherdog: | 419 |
Todd Bjornethun is a retired American professional mixed martial artist. He competed for Shooto and Pancrase.
|-| Win| align=center| 7–5| Kazuhiro Kusayanagi| TKO (punches)| Shooto: Reconquista 4| | align=center| 2| align=center| 4:01| Tokyo, Japan| |-| Loss| align=center| 6–5| Allan Goes| Submission (triangle choke)| EF 4: Extreme Fighting 4| | align=center| 1| align=center| 0:30| Des Moines, Iowa, United States| |-| Win| align=center| 6–4| Rudyard Moncayo| Submission (heel hook)| EF 3: Extreme Fighting 3| | align=center| 1| align=center| 0:00| Tulsa, Oklahoma, United States| |-| Win| align=center| 5–4| Eric Lavigne| KO (punches)| VTJ 1996: Vale Tudo Japan 1996| | align=center| 1| align=center| 6:53| Urayasu, Chiba, Japan| |-| Win| align=center| 4–4| Akihiro Gono| Submission (armbar)| Shooto: Vale Tudo Junction 3| | align=center| 3| align=center| 1:12| Tokyo, Japan| |-| Loss| align=center| 3–4| Erik Paulson| Submission (guillotine choke)| Shooto: Vale Tudo Junction 1| | align=center| 2| align=center| 0:26| Tokyo, Japan|Middleweight debut.|-| Win| align=center| 3–3| Orlando Wiet| Submission (triangle choke)| UFCF: United Full Contact Federation 1| | align=center| 1| align=center| 5:43| | |-| Loss| align=center| 2–3| Masakatsu Funaki| Submission (armbar)| King of Pancrase tournament opening round| | align=center| 1| align=center| 2:20| Tokyo, Japan| |-| Win| align=center| 2–2| Vernon White| Decision (lost points)| Pancrase: Road To The Championship 5| | align=center| 1| align=center| 15:00| Tokyo, Japan| |-| Loss| align=center| 1–2| Minoru Suzuki| Submission (armbar)| Pancrase: Road To The Championship 4| | align=center| 1| align=center| 3:11| Osaka, Osaka, Japan| |-| Win| align=center| 1–1| Gregory Smit| Decision (unanimous)| Pancrase: Road To The Championship 3| | align=center| 1| align=center| 15:00| Tokyo, Japan| |-| Loss| align=center| 0–1| Ryushi Yanagisawa| Submission (heel hook)| Pancrase: Pancrash! 2| | align=center| 1| align=center| 7:12| Nagoya, Aichi, Japan|