Eamon Wade Sullivan (born 30 August 1985) is an Australian former sprint swimmer, three-time Olympic medallist, and former world record-holder in two events. He was also the winner of the first season of Celebrity MasterChef Australia, and followed up his swimming career with a number of food business ventures.

At the 2004 Olympics in Athens, Sullivan competed in the 4 × 100 m freestyle relay. He split 49.19 on the second leg, putting Australia in fifth position at the 300 m mark. Australia ultimately finished sixth.

In March 2006, Sullivan competed at the Commonwealth Games in Melbourne. He split 48.21 on the second leg of the 4 × 100 m freestyle relay, with Australia winning the silver medal in an overall time of 3:15.54. On day four, he recorded a time of 49.57 to finish fourth in the 100 m freestyle. On the final day of competition, Sullivan swam the freestyle leg of the 4 × 100 m medley relay. Australia led for the entire race, with Sullivan anchoring in 48.15. Australia won the gold medal in a games record time of 3:34.37.

In December 2006, Sullivan competed at the Australian Championships in Brisbane to gain selection for the 2007 World Championships in Melbourne. He won the 100 m freestyle with a personal best time of 48.97. He then went 22.00 in the 50 m freestyle, breaking the Australian record of 22.07 set by Brett Hawke in 2004.

At the World Championships in Melbourne, Sullivan's first event was the 4 × 100 m freestyle relay. He led off in 48.88, with Australia ultimately finishing fifth in a time of 3:15.89. In the 100 m freestyle, Sullivan recorded a personal best of 48.47 to win the bronze medal, finishing 0.04 seconds behind Filippo Magnini and Brent Hayden, who dead-heated for the gold medal. Sullivan later finished fifth in the 50 m freestyle, recording a time of 22.05. His final event was the 4 × 100 m medley relay, an event where the favoured USA were disqualified during the heats. In the final, Sullivan split 47.89 on the freestyle leg, securing the gold medal for Australia in an overall time of 3:34.93.

In February, Sullivan competed at the New South Wales Championships in Sydney. He went 21.56 in the 50 m freestyle, breaking Aleksandr Popov's world record of 21.64 from 2000. On the same night, Sullivan swam in the 4 × 100 m freestyle relay, recording 48.11 on the first leg to break Michael Klim's Australian record of 48.18 from 2000. Sullivan's world record was later broken by Alain Bernard of France in March.

In March, Sullivan competed at the Australian Championships to gain Olympic qualification. In the 100 m freestyle, he went 47.55 in the semifinals to break the Australian record. His time was 0.05 seconds slower than the world record, which was also held by Bernard. In the final, Sullivan lowered his own national record to 47.52, again missing Bernard's mark. Sullivan later swam in the 50 m freestyle, going 21.41 in the semifinals to reclaim the world record. He broke it again in the final, recording 21.28.

At the Beijing Olympics, Sullivan competed in four events. First was the 4 × 100 m freestyle relay, where Sullivan swam the first leg. He recorded 47.24 to break Bernard's 100 m freestyle world record and give Australia an early lead. Australia eventually won the bronze medal in 3:09.91, being one of five nations to surpass the former relay world record. In the 100 m freestyle, Sullivan's world record was broken by Bernard in the first semifinal. Sullivan immediately reclaimed the mark, however, by going 47.05 in the second semifinal. In the final, Sullivan won the silver medal in 47.32, losing to Bernard by 0.11 seconds. Two days later, Sullivan came sixth in 50 m freestyle with a time of 21.65. His final event was the 4 × 100 m medley relay, where he split 46.65 on the freestyle leg to win the silver medal.