| Birth Name: | Denning Iosua Tyrell |
| Birth Date: | 9 May 1976 |
| Birth Place: | Motootua, Samoa |
| Position: | Scrum-half |
| Amatteam1: | Kaierau |
| Amatteam2: | Border |
| Amatteam3: | Kaierau |
| Amatteam4: | Border |
| Amatteam5: | Inglewood |
| Provinceapps1: | 16 |
| Provinceapps2: | 22 |
| Provinceapps3: | 92 |
| Provincepoints1: | 10 |
| Provincepoints2: | 24 |
| Provincepoints3: | 182 |
| Provinceyears1: | 1997-2000 |
| Provinceyears2: | 2001-2003 |
| Provinceyears3: | 2005-2012 |
| Province1: | Wanganui |
| Province2: | Taranaki |
| Province3: | Wanganui |
| Repyears1: | 2000-2003 |
| Repcaps1: | 13 |
| Reppoints1: | 0 |
Denning Iosua Tyrell (born May 9, 1976 in Motootua) is a Samoan rugby union player. He plays as a scrum-half.
He debuted for Samoa in 2000, against Fiji, at Apia, on June 3, 2000. He was part of the 2003 Rugby World Cup roster, where the match against South Africa at Brisbane. He also played for Wanganui and Taranaki in the NPC.