Konteradmiral (German pronunciation: [ˈkɔntɐʔatmiˌʁaːl] ⓘ; abbreviated KAdm) is a senior naval flag officer rank in several German-speaking countries, equivalent to counter or rear admiral.

Kriegsmarine (1849 to 1918) there were the flag officer ranks Kontreadmiral (also spelled Konteradmiral in the 20th century), Viceadmiral , Admiral and Großadmiral.

It is equivalent to Generalmajor in the Heer and Luftwaffe or to Admiralstabsarzt and Generalstabsarzt in the Zentraler Sanitätsdienst der Bundeswehr.

Shoulder straps had to be worn on uniform jackets and consisted of twisted gold-braids (no pips or stars) on padding in navy blue weapon color.

Konteradmiral (OF-6) was the lowest flag officer grade of the Volksmarine, equivalent to the one-star rank Generalmajor (OF-6 as well).