What is the title of the senior active duty Coast Guard commander?

The title of the senior active duty Coast Guard commander is "Commandant." This designation is critical as the Commandant is responsible for overseeing the entire United States Coast Guard, ensuring its operational readiness, administration, and policy development. This role is equivalent to that of a four-star admiral in other branches of the military, yet it specifically categorizes the highest-ranking officer within the Coast Guard. The Commandant plays a key role in advising the Secretary of Homeland Security and other federal entities regarding maritime issues and ensuring the service's alignment with national security objectives.

Admiral and Captain, while ranks within the Coast Guard, do not represent the singular position of leadership that the Commandant holds. The title of Chief of Staff typically refers to a senior advisor or administrative officer but does not denote the highest commanding authority of the service. Each of these positions plays distinct roles, but the Commandant is the pinnacle title within the active duty command structure of the Coast Guard.