Thomas Dulac, born May 25, 1969, is a French climbing instructor and mountain guide. He also works as a lecturer, journalist, and author of hiking guides.

It all began when, at the age of 17, he read Frison-Roche's "Premier de cordée." He then decided to become a guide. His first climb took place on the cliffs of Notre-Dame du Cros in the Aude department with his high school sports teacher.