Kollontay (also Kollontai, Russian: Коллонтай) is a Russian language transcription of the Polish surname Kołłątaj.

It can refer to the following people:

• Alexandra Kollontay (Kollontai) (1872–1952) — Russian Communist revolutionary, Soviet statesman and ambassador
• Mikhail Kollontay (b. 1952) — Russian composer and pianist

This page lists people with the surname Kollontay.
If an internal link intending to refer to a specific person led you to this page, you may wish to change that link by adding the person's given name(s) to the link.