Wiik is a Norwegian surname.
People with the surname Wiik include:
Aurélien Wiik, a French actor;
Björn Wiik, a physicist;
Fredrik Johan Wiik, a Finnish geologist;
Johan Wiik, a politician;
Kalevi Wiik, a Finnish linguist;
Karl H. Wiik, a Finnish politician;
Lise Wiik, a politician;
Melissa Wiik, a footballer;
Rolf Wiik, a Finnish fencer;
Ryan Wiik, an actor.