Boys basketball's 2018 state tournament bracket in Class 5A.
Seeding notes: All league champions are to be seeded in the top 32 teams. In 5A, Columbine (34) was moved to 32.
Bracket notes: Denver South and Bear Creek exchanged position to avoid first round league match-ups per seeding rules. Mullen, Boulder and Poudre were moved to avoid first round league match-ups.