Project Kotlin was born in Saint Petersburg, Russia, where one of the main JetBrains' development offices is located. Kotlin is the name of an island situated nearby Saint-Petersburg, in the Gulf of Finland, with a beautiful town of Kronstadt build upon the island.
Disclaimer 1: We are pretty sure that no coffee or other exotic cultures are grown in Kotlin in any significant amounts.
Disclaimer 2: Kotlin Class Destroyers were named after the same island. Our language is not intended for any class destruction.