Senior captain is a rank which is used in some countries' armed forces, navies, merchant marines, civil aviation and in the airline industry.
[citation needed] The corresponding fourth junior office rank of the Vietnamese Army, đại úy, is usually translated as captain.
In the case of the Afghan National Police, the rank of jag turan is most commonly translated as "staff captain".
[citation needed] The rank of senior captain is rare in Western militaries, but can be found in the German military, where the rank of Stabshauptmann (Stabskapitänleutnant in the Navy) was created in 1993 for officers of the Militärfachlicher Dienst (former NCOs in specialist positions) who could not be promoted to field grade.
In December 2019 Ministry of Defence has decided to reintroduce rank of Senior captain into Serbian Armed Forces.
In the airline industry, "senior captains" may perform a coordination role in the organization of the shifts and the service of the air-navigation personnel.