Tibo Debaillie (born 10 September 1997) is a Belgian professional gridiron football defensive lineman for the BC Lions of the Canadian Football League (CFL). He played college football at Towson.

Debaillie was born in Gistel, Belgium on 10 September 1997. His father, Yvan, played American football in the 1980s, as did three of his uncles.^[1][2] Tibo gave up association football and dreamed of playing college football in the United States.^[1] When he was 13 he joined the Ostend Pirates of the Belgian Football League, a league of players already in their 20s, because there was nobody in his age category.^[2][3] Over the next few years he earned two player of the year awards and helped his team win the Belgian Bowl XXIX.^[2] He also earned four caps with the Belgium national American football team, including a game against Poland two days after his 16th birthday.^[4][5][6]

In 2016, Debaillie was discovered by Europe’s Elite, an organization co-founded by former pro player Brandon Collier that connects talented European prospects with American college coaches.^[7][8] He took a trip to America that summer, visiting Penn State, Maryland, Towson, Albany and UMass as Europe's Elite's first ever representative.^[4][9] Debaillie later took an official visit to Towson with his family in early September, committing to the school in Towson, Maryland shortly afterwards.^[7]

Debaillie played college football for the Towson Tigers from 2017 to 2019, logging 29 tackles, three tackles for loss and 1.5 sacks over 22 career games.^[10] He cited the tempo of the game as the biggest adjustment he had to make to play in America.^[2]

Debaillie played in all 11 games as a freshman, notably recording a sack against in-state rivals Maryland, but only appeared in two games as a sophomore due to injury.^[1] In 2019, he started nine games on the defensive line, recording a career-high nine tackles against The Citadel as well as an assisted sack of Kyle Trask against #9 Florida.^[11][12] The 2020 season was cancelled due to the COVID-19 pandemic; head coach Rob Ambrose lamented Debaillie's lost year, saying "This is his killer year, the one he’s supposed to get to talk about for the rest of his life and one that we get to brag about for the rest of his life."^[1] He was able to secure a flight to Belgium before the country went on lockdown, and had to finish his classes online while staying conditioned.^[1]