Zoltán Ribli (born September 6, 1951 in Mohács) is a Hungarian chess grandmaster and International Arbiter (1995).

At London in 1984, he participated in the high-profile match between USSR and the Rest of the World, defeating his Soviet counterpart, Rafael Vaganian by a narrow margin.

In 1983, Ribli defeated Torre (+3-1=6) in the quarter-final Candidates Match, but lost to Vasily Smyslov (+1-3=7) in the semi-final.

Ribli became a fearsome competitor on the international tournament circuit of the 1970s and 1980s, chalking up victories at Kecskemét 1972 (with Suetin), Budapest 1975 (with Polugaevsky), Mexico 1980, Baden-Baden 1981 (with Miles), Portorož/Ljubljana 1985 (Vidmar Memorial, with Miles and Portisch), Dortmund 1986, Reggio Emilia 1987, and Wijk aan Zee 1989 (with Anand, Sax and Nikolić).

As a writer on the topic of chess, his analysis and tournament reports have been published in magazine articles around the world.