Kołłątaj

Kołłątaj is a Polish language surname. It is commonly rendered into English without diacritics as Kollataj. The Russian language version is Kollontay.

The surname may refer to:


 * Antoni Kołłątaj (1776–1794), nephew of Hugo
 * Benedykt Kołłątaj, Polish-Lithuanian lieutenant
 * Hugo Kołłątaj (1750–1812), Polish Roman Catholic priest, social and political activist, political thinker, historian and philosopher
 * Kołłątaj's Forge, a group of activists and writers
 * Jan Kołłątaj-Srzednicki (1883–1944), Polish brigadier general
 * Rafał Kołłątaj (1750–1833), Polish nobleman and brother of Hugo