How can I find out the address of someone who lives in Berlin, Germany?
Anonymous: You can use the online address finder here
You can use the online address finder here: https://www.deutschepost.de/de.html It won't work for people who have chosen to have their address removed from the public registry.
Ask them to give it to you.
If you search, using the name of the person, you may find it online unless the individual wants to remain private.
Plenty of illegal ways. Legally, not sure.