Senior warrant officer

Senior warrant officer (SWO) is a warrant officer rank in the Singapore Armed Forces and the South African National Defence Force.

Singapore
It is the second highest warrant officer rank, ranking below chief warrant officer.

The service and formation regimental sergeant majors are mostly senior warrant officers. Many senior warrant officers remain in SAF Warrant Officer School to train and groom master sergeants to be good warrant officers. Roles undertaken by senior warrant officers may include pinnacle appointments such as Sergeant Major of the Army (SMA), Chief Warrant of the Air Force (CWAF) or Navy (CWN) and Sergeant Major of the Singapore Armed Forces (SAFSM). They also may be the regimental sergeant majors in Singapore combined armed divisions.

South Africa
In 2008 the warrant officer ranks of the South African National Defence Force were expanded and the rank of senior warrant officer was created.