Nikolaos "Nick" Calathes (Greek: Νικόλαος "Νικ" Καλάθης; born February 7, 1989) is a Greek-American professional basketball player for Panathinaikos of the Greek Basket League and the EuroLeague. He played college basketball for the Florida Gators. An All-EuroLeague First Team selection in 2018 and 2019, Calathes has also played in the NBA and the VTB United League. He represents the National Team of Greece internationally.
Calathes was born in Casselberry, Florida. His father, Yiannis Calathes, who was of Greek origin, he started the Orlando Raptors where he won many AAU Championships. He attended Lake Howell High School in Winter Park, Florida, and graduated as the leading high school basketball scorer in Seminole County history. He teamed with future Florida Gator Chandler Parsons, future VCU Ram Joey Rodriguez, to help Lake Howell to a 31–3 record, and a state championship in 2007. At Lake Howell, Calathes twice won the Florida Mr. Basketball award, placing him on a long list of NBA players who have won that award, including Vince Carter, Amar'e Stoudemire, Brandon Knight, and Austin Rivers.