Goran Čolak (born 24 April 1983, Zagreb) is a Croatian free-diver.
Čolak started his amateur free diving career in 2006 when he entered his first competition, the Submania Cup in Zagreb. Less than one year later, he won his first Croatian championship and broke several national records. Čolak turned professional in 2011 and joined the exclusive group of free diving professionals around the world.
Čolak was the 2009 Confédération Mondiale des Activités Subaquatiques (CMAS) World Champion and world record holder in a joint event with AIDA International (AIDA), the strongest free diving organization in the world. Čolak dove 244 m in dynamic apnea with fins and won CMAS and overall first place, breaking the CMAS world record.
Čolak was the 2011 CMAS World Champion in dynamic apnea with fins, with a 250 m swim, setting a new CMAS world record, his fourth CMAS world record in his short career. On October 16, 2011, he became the AIDA International world champion in the same event (AIDA World Championship in Lignano, Italy), and set the new AIDA world record of 273 m, surpassing the previous record of 265 m held by Dave Mullins. At the same event he won two gold medals, one silver medal and set a new world record.
Čolak won the 2012 AIDA Team World Championship, held in Nice, France with Veljano Zanki and Božidar Petani as his teammates. This was first appearance and first gold medal for the Croatian team at a team World Championships. In addition to gold medal the Croatian team set the new all-time best in points with 840 points, beating the previous record of 839 points set by the Denmark team at Okinawa in 2010.
Čolak competed in 2013 Belgrade Pool World Championship, and won all three gold medals from each of the pool disciplines and set one world record. Goran Čolak won the dynamic apnea without fins finals with a 206 m dive, the dynamic apnea with fins with a 281 m dive, which beat his current world record of 273 m set in 2011. On the third day he won his third gold medal in static, holding his breathe for 8minutes and 59 seconds. Čolak was dominating the Belgrade World Championship from the very beginning to the end, winning every qualification heat and every final. His results in qualifications were 182 m in DNF, 250 m in DYN and 8:34 min in STA.