Blazon: Argent issuant from a base a pine tree vert surmounted by a letter Z sable
The pine tree likely comes from the arms of the former municipality Stetten ob Rottweil, which was incorporated into Zimmern ob Rottweil in 1973. The other municipalities, Horgern and Flözlingen, bore arms featuring (respectively) a pine branch and a stag trippant on a triple mount.
Blazon: Per pale azure a church on a mount in base proper, in chief the letter Y or, and argent a wolf rampant gules
Both the wolf and the letter Y derive from the municipal arms of nearby regions. The red wolf, also known as the “Passau wolf,” has been used by the diocese of Passau since at least 1259. The Y is an abbreviation of “Yppolytus,” or St. Hippolytus of Rome, after whom the diocese of St. Pölten was named. The church is probably a depiction of the local church of St. James. The current building dates back to the 14th century, but mentions of a church on the same site date back to 985.
Blazon: Per pale I per quarterly i and iv gules a castle triple-towered or windowed azure (Castile), ii and iii argent a lion rampant purpre crowned and armed or, langued gules (León); II azure a castle triple-towered or windowed of the field on a mount in base proper, in chief a molet of eight points argent
Blazon: Vert a fess ermine of five spots between in chief an eagle displayed, wings inverted perched on a thunderbolt fesswise between two garbs or and in base on water barry wavy argent and azure a Viking ship of third, sails of the fourth
Crest: On a wreath vert and argent on a mount an oak tree proper fructed or bound thereto by a chain proper two anchors in saltire of the third
Supporters: On the dexter a Lincolnshire Red Shorthorn Bull and on the sinister a Lincoln Longwool Ram both guardant proper, each supporting a croizer or
Blazon: Gules on a pale between two serpents erect argent a dexter wing of the field, surmounted by a triple mount in base proper
The arms were originally granted as shown by Ferdinand I, Holy Roman Emperor sometime between 1522 and 1529. It was re-granted by Maximilian II, Holy Roman Emperor in 1569. The color combination is likely inspired by the Austrian coat of arms, but the origin of the charges is unclear.