Kļaviņš (feminine: Kļaviņa) is a Latvian masculine surname, derived from the Latvian word for "maple" (kļava). Individuals with the surname include:
Aldis Kļaviņš (1975–2000), Latvian slalom canoer David Klavins (born 1954), Latvian-German piano maker Edgars Kļaviņš (born 1993), Latvian ice hockey player Jānis Kļaviņš (1933–2008), Latvian chess master Olafs Kļaviņš (born 1964), Latvian bobsledder