Kotlin
Kotlin means:
- Kotlin (Island) , a Russian island in the Gulf of Finland in the Baltic Sea
- Kotlin (Powiat Jarociński) (formerly Kotlin in Jarotschin County, Poznan Province ), a village in Greater Poland Voivodeship, Poland
- Kotlin, a rural municipality in the Jarociński powiat of the Greater Poland Voivodeship; see Gmina Kotlin
- Kotlin (programming language) , a programming language from JetBrains
- Kotlin-class , a NATO code name for a Soviet class of destroyers