In Oman, the Sultan's Armed Forces (SAF) are responsible for defending the country, ensuring internal security, and protecting the monarchy; it trains with foreign partners such as the Gulf Cooperation Council (GCC) countries, the UK, and the US; the SAF has a security relationship with the British military going back to the 18th century; today, the SAF and the British maintain a joint training base in Oman, and the British military uses the facilities at Al Duqm Port; in 2019, the US obtained access to the port, expanding on previous military cooperation agreements in 2014, 2010, and 1980; Oman also allows other nations to use some of its maritime facilities, including China; the SAF is part of the Peninsula Shield Forces, a joint military force established by the GCC countries with the aim of maintaining security and stability in the region

Oman's naval forces conduct maritime security operations along the country’s long coastline, including patrolling, ensuring freedom of navigation in the key naval chokepoint of the Strait of Hormuz, and countering piracy and smuggling; Oman participates in the US-led, multinational Combined Maritime Forces (CMF), which operates multinational task forces conducting maritime security in regional waters (2025)