About 40 students attended the event, and a few spoke about how violence against women is still a problem today.
The vigil took place in front of the plaque were the names of the victims are inscribed.
The event was organized by the women's branch of the student association ASSÉ.
All morning, passersby have been laying white roses and bowing their heads, observing a moment of silence to remember. Some have lit candles.
École Polytechnique has organized a vigil for 1 p.m. at the same spot, where officials including Premier Philippe Couillard and Mayor Denis Coderre will speak. Survivors of the tragedy are expected to speak as well.
The group will then make their way down the hill to Place-du-6-décembre near the corner of Queen Mary and Côte-des-Neiges, where a much larger vigil will take place, organized by groups including Quebec Women's Federation.