As you know German language is famous for its compound words. Compound words means simply combining two or more words and forming a one long word.
1. Kraftfahrzeughaftpflichtversicherung (36)
The meaning of this word is motor vehicle liability insurance and simplified as Kfz-Haftpflichtversicherung.
2. Rechtschutzversicherungsgesellschaften (39)
The meaning of this word is legal protection insurance companies. And this word is also in Guinness World Records as longest word in German.
3. Donaudampfschifffahrtsgesellschaftskapitän (42)
The meaning of this word is Danube steamship company captain.
These are some of the longest german words. If you any other long words let me know in our comments section!