Staff captain is the English translation of a number of military ranks:
In the Czechoslovak Army, until 1953, Staff Captain (Czech: štábní kapitán, Slovak: štábny kapitán) was a senior captain rank, ranking between Captain and Major.
A Staff-Captain (staabikapten in Estonian language), was an Estonian military rank in the Naval forces of Estonia, which existed between 1918 in 1922.
The rank of Staff Captain (Irish: captaen na foirne) was used by the Irish Republican Army during the Irish revolutionary period (1917–23).
Staff captain (Stabskapitän, also: Stabshauptmann) is a historic military rank used in the Prussian army.
It ranked between the Premierleutnant (later called Oberleutnant) and Hauptmann/Rittmeister in the Prussian army. Its holder represented the actual captain and company commander in his absence, frequently and often for long periods, should his (usually noble) Hauptmann show no interest in leading the company, though the Hauptmann would retain his rank, status and uniform.
In the army of Frederick the Great, a regiment's regimentschef, oberst, staff officers, company commanders and those of nearby rank received a far higher rank than the staff captains who actually led the company. From this difference later developed the salary difference between a first class "Hauptleute first class" and "Hauptleute second class".