The Sam Davidson Memorial Trophy hasn’t been seen since the Thunderbirds celebrated their championship win with it on campus last Wednesday.
Dan Elliott, spokesman for UBC Athletics, said the trophy appears to have gone missing during the party.
"Unfortunately at one point in the night, they put it down and it was gone when they went back to get it. So it was stolen and we are currently looking for it," he said, adding that the team is very disappointed.
The team has won the trophy 13 times in the past.
"With trophies, there's always all kinds of stories behind them," Elliott said.
"Hopefully, when we eventually, ideally, get this one back, there will be another story to tell."