Marin Cilic and his wife Kristina announced that they are expecting their second child. The couple has a boy, Baldo, who was born in January 2020. 

Cilic and Kristina Milkovic married in 2018. The couple married at the Sveti Nikola Church in Cavtat in front of close friends and family. 

Marin Cilic has reached three grand slam finals in his career. He won the 2014 US Open title beating Kei Nishikori in the finals. His two losses came against Roger Federer – at the 2017 Wimbledon Champion and 2018 Australian Open.