| Ilaisa Tuiaki | |
| Current Title: | Defensive Line Coach |
| Current Team: | Oregon State Beavers |
| Birth Date: | December 6, 1978 |
| Birth Place: | Kahuku, Hawaii |
| Coach Years1: | 2006 |
| Coach Team1: | Kearns HS (UT) (WR/OLB) |
| Coach Years2: | 2007 |
| Coach Team2: | Kearns HS (UT) (OC) |
| Coach Years3: | 2008 |
| Coach Team3: | Utah (GA) |
| Coach Years4: | 2009–2010 |
| Coach Team4: | Utah State (RB/ST) |
| Coach Years5: | 2011 |
| Coach Team5: | Utah State (RB/RC) |
| Coach Years6: | 2012 |
| Coach Team6: | Utah (FB/TE) |
| Coach Years7: | 2013–2014 |
| Coach Team7: | Utah (DL) |
| Coach Years8: | 2015 |
| Coach Team8: | Oregon State (LB/ST) |
| Coach Years9: | 2016–2022 |
| Coach Team9: | BYU (DC/DL) |
| Coach Years10: | 2024–present |
| Coach Team10: | Oregon State (DL) |
Ilaisia Tuiaki (born December 6, 1978) is an American football coach who is the defensive line coach at Oregon State University. During his college playing career, Tuiaki was a linebacker and fullback at Southern Utah University (SUU) and Snow College. Tuiaki is a member of the Church of Jesus Christ of Latter-day Saints and earlier in his life served as an LDS missionary to New York City. In December 2015, Tuiaki was hired by Kalani Sitake to follow him to BYU as the defensive coordinator after serving as a coach at the University of Utah and Oregon State University with Sitake.[1] [2] Following the 2022 season, Tuiaki resigned his position as the defensive coordinator at BYU.[3]
Tuiaki has a bachelor's degree in English and physical education from SUU (2006).[4]