The Vlaamse Wiskunde Olympiade (English: Flanders Mathematics Olympiad; VWO) is a Flemish mathematics competition for students in grades 9 through 12. Two tiers of this competition exist: one for 9th- and 10th-graders, and one for 11th- and 12th-graders.
The competition lasts three rounds. During the first and second rounds, students must answer 30 multiple-choice mathematics problems. The first round occurs in schools, and the second round is organized by province, and is administered at various universities. The first round has a three-hour time limit for completion, the second round has a two-hour time limit. The final round consists of four problems which require a detailed and coherent essay-type response. After the final round, 3 contestants are selected to compete in the International Mathematical Olympiad.