| Joe Zemaitis | |
| Country: | United States |
| Nickname: | Super Joe |
| Birth Date: | June 31 |
| Coach: | Andrew Hahne |
| Currently Coaches: | Swim Neptune (AZ) |
Joe Zemaitis is a former professional triathlete from the United States. In 1998, he became the youngest person to complete the Ironman Triathlon in under 10 hours.[1] In 2005, he won the USA Triathlon Pro/Elite Rookie of the Year.
Zemaitis graduated from Lake Forest College in 2002.