Kalniņš
Kalniņš is a native Latvian-language topographic surname, derived from the Latvian word for "hill". May also be Russified as Kalnin. Notable people with the surname include:
- Alfrēds Kalniņš, Latvian composer
- Brūno Kalniņš, Latvian social democratic politician and historian
- Eduards Kalniņš, Latvian general.
- Gatis Kalniņš, Latvian striker
- , German-Latvian bishop
- Imants Kalniņš, Latvian composer
- Ivars Kalniņš, Latvian film and television actor
- Jānis Kalniņš, Canadian composer, son of Alfreds
- Jānis Kalniņš, Latvian ice hockey goaltender
- Klāra Kalniņa , Latvian feminist, suffragette, editor, and politician
- Leonīds Kalniņš, Latvian politician and general
- Pauls Kalniņš, Latvian social democratic politician and four-time acting president
- Pēteris Kalniņš, Latvian luger
- Rodrigo Kalniņš, Latvian actor
- Rolands Kalniņš, Latvian film director
- Rēzija Kalniņa, Latvian actress
- Zanda Kalniņa-Lukaševica, Latvian politician
