The Republic of Singapore Navy (RSN), is the maritime force of the Armed Forces of Singapore.
The RSN is organized into four commands:
- The Fleet.
- The Coastal Command.
- The Naval Logistics Command.
- The Training Command.

The mission of the Republic of Singapore Navy is to defend Singapore against sea-borne threats and to protect its sea lines of communications that encompass the Singapore Strait and its access routes. To enforce this missions, RSN operates 6 frigates, 4 amphibious vessels and several patrol vessels. It is composed of approximately 4,000 sailors.