How do I address my BJJ instructor?

The title Professor comes from the Portuguese word for teacher and is the traditional way to address a BJJ black belt instructor. Some academies are more formal and expect all students to use this title, while others are casual and everyone uses first names. In no-gi focused gyms or MMA academies, Coach is more common. Some instructors have strong preferences about how they are addressed, so asking directly is perfectly fine and shows respect. Higher-ranking instructors may also be called Master or Grand Master, particularly in traditional Brazilian lineages. Regardless of the title used, showing respect to your instructor through your actions, punctuality, attention during instruction, and willingness to learn matters more than the specific word you use.