George Kalovelonis (Greek: Γεώργιος Καλοβελώνης; born 23 August 1959) is a former tennis player from Greece, who represented his native country as a lucky loser at the 1988 Summer Olympics in Seoul.

There he was defeated in the first round by fellow lucky loser Bong-Soo Kim from South Korea.

The right-hander reached his highest singles ATP-ranking on 23 June 1986, when he became World Number 208.

Kalovelonis represented Greece in Davis Cup matches from 1978 through 1992.

This biographical article relating to Greek tennis is a stub.