Commander-captain or commanding captain is a naval rank, used in several navies, including those of all Scandinavian nations. It is rated OF-4 within NATO forces.
On 11 February 1693, the rank was codified, by King Christian V, with the publication of the updated Danish order of precedence. Here "" was placed below , above and equal to . As of 2022, the rank is positioned below and above . It holds the grade of M401 within the Ministry of Defence's pay structure. Officially, the rank is translated as "Commander, Senior Grade".
In the Swedish Navy, the rank of is ranked below and above . Before 1972, the rank was divided into two ranks: and .