The language of instruction at the Université de Montréal is French. To study in a UdeM program, your knowledge of French must correspond to French level B2 (Common European Framework of Reference for Languages, CEFRL).
Students who are not from a French-speaking university must submit proof of French proficiency along with the French Proficiency Form (filled out by home university). The proof of French proficiency can be issued by the language department of your university, Alliance française, a language school, etc. Most programs of study at UdeM require a B2 level of French.
Some programs require official French tests and higher levels of French proficiency, please see the list of programs with particularities for more information.