Altstrimmig is a municipality (Ortsgemeinde) located in the Cochem-Zell district within the state of Rhineland-Palatinate, Germany. It functions as part of a collective municipality known as a Verbandsgemeinde.
The village belongs specifically to the Verbandsgemeinde of Zell. The administrative seat for this collective municipality is situated in the neighboring municipality of Zell an der Mosel.