École secondaire Gabriel-Dumont is a public French first language high school in London, Ontario, Canada.

Over time, the program grew to include a wide variety of subjects and became known as Le Module scolaire de langue française (MSLF).

Due to changes in the organizational structure of the education system in Ontario, the MSLF became Gabriel-Dumont in 1998.

The project that would become CDL had been in the works for over a decade; however, it was stymied by political fighting.

In 2007, it was announced that Gabriel-Dumont would move from its location within the CDL project and into its own building in September 2012 on Evans Blvd in the Summerside subdivision.