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

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

Konteradmiral, abbreviated KAdm or KADM, is the second lowest naval flag officer rank in the German Navy. It is equivalent to Generalmajor in the Heer and Luftwaffe or to Admiralstabsarzt and Generalstabsarzt in the Zentraler Sanitätsdienst der Bundeswehr.

The rank insignia, worn on the sleeves and shoulders, is a single five-pointed star above a single normal stripe and a wide stripe. The star is omitted on rank loops. Konteradmiral is a B7 grade in the pay rules of the Federal Ministry of Defence.

The sequence of ranks in decreasing seniority is:

In the Kaiserliche Marine and Kriegsmarine, Konteradmiral was an OF-6 one-star officer rank equivalent to a Heer or Luftwaffe Generalmajor, and to an SS-Brigadeführer and Generalmajor of the Waffen-SS.

The rank insignia consisted of shoulder strap and sleeve stripes. 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.

Cuff insignia consisted of one golden big stripe, one normal stripe, and a five-point naval star above. The sleeve rings encircled the lower cuffs.