Vizeadmiral (German pronunciation: [ˈfiːtsəʔatmiˌʁaːl, ˈvi-] ⓘ; abbreviated VAdm) is a senior naval flag officer rank in several German-speaking countries, equivalent to Vice admiral.

In the Austro-Hungarian Navy there were the flag-officer ranks Kontreadmiral (also spelled Konterdmiral in the 20th century), Viceadmiral , and Admiral, as well as Großadmiral.

In the Belgian Navy, the rank is known as Vizeadmiral (in German), vice-admiraal (in Flemish) and vice-amiral (in French).

The sequence of ranks (top-down approach) in that particular group is as follows: In the Kaiserliche Marine and Kriegsmarine, Vizeadmiral was a flag officer rank equivalent to a Heer or Luftwaffe Generalleutnant, and to an SS-Gruppenführer und Generalleutnant of the Waffen-SS.

Shoulder straps had to be worn on uniform jackets and consisted of twisted gold-braids (one pip or star) on padding in navy blue weapon color.