École Mathieu-Martin is a Francophone high school located on Champlain Street in Dieppe, New Brunswick, Canada.

With the prevalence of francophone students being vulnerable to assimilation within this design, educators and concerned parents alike sternly condemned the unification proposition, which would be a backlash to the minority language and Acadian communities of the province.

[3] Mathieu-Martin is one of the two French school in the province that offers the International Baccalaureate program, and one of two in Atlantic Canada, the other being in Nova Scotia.

Diploma candidates are also required to complete the Theory of Knowledge course, the extended essay and the CAS hours.

The school participates in almost every New Brunswick Interscholastic Athletic Association (NBIAA) sport including junior and senior soccer, badminton, field hockey, rugby, football, track and field, softball, baseball, hockey, senior basketball, golf, curling and volleyball.