Kieran Smith, a prominent swimmer from the United States, has made significant strides in his career. Born on 20 May 2000 in Sydney, Australia, Smith now resides in Gainesville, Florida. He represents the Ridgefield Aquatic Club and the University of Florida Gators.

| Season | Event | Rank |
|---|---|---|
| 2021 | Men's 400m Freestyle | B Bronze |
| 2021 | Men's 4 x 200m Freestyle Relay | 4 |
| 2021 | Men's 200m Freestyle | 6 |
At the World Championships, Smith has been part of successful relay teams. In 2022, he won gold in the Men's 4 x 200m Freestyle Relay in Budapest. The following year, he earned a silver medal in the same event in Fukuoka. His individual performances include sixth place in the Men's 200m Freestyle in Budapest and seventh place in Fukuoka.
In July 2024, Smith competed in the Men's 400m Freestyle Heat 4 at Paris La Defense Arena. The event featured swimmers from Brazil, Switzerland, Belgium, Lithuania, Australia, South Korea, and the USA. The heat took place on 27 July at 12:03 PM local time.
Smith also participated in the Men's 4 x 200m Freestyle Relay Final on 30 July at Paris La Defense Arena. The USA team finished second behind Great Britain. Other competing teams included France, Germany, China, Israel, Japan, South Korea, and Australia.
Smith began swimming competitively at age seven, inspired by his older brother Grayson. His first major international competition was the 2018 World Short Course Championships in Hangzhou, China. He competed in the 400m individual medley and the 4x200m freestyle relay heats.
In addition to his Olympic and World Championship successes, Smith has excelled at the NCAA level. He was the 2021 NCAA Champion in the 200-yard freestyle and held the NCAA record for the 500-yard freestyle while competing for the University of Florida.
In 2022, Smith decided to turn professional to focus on international competition. He stated that turning pro allowed him to concentrate entirely on his training schedule and international events.
Smith also enjoys open water swimming. His interest stems from his training with Emmanuel Lanzo at Ridgefield Aquatic Club. He finds open water swimming to be a pure form of racing without lane lines separating competitors.
Outside of swimming, Smith enjoys golf, cooking, and playing cards. He studied Applied Physiology and Kinesiology at the University of Florida. His family includes his father Patrick, mother Sandra, and older brother Grayson.
Looking ahead, Smith aims to continue competing at high levels internationally. With his strong track record and dedication to training, he is poised for further success in upcoming competitions.
Kieran Smith, a prominent swimmer from the United States, has made significant strides in his career. Born on 20 May 2000 in Sydney, Australia, Smith now resides in Gainesville, Florida. He represents the Ridgefield Aquatic Club and the University of Florida Gators.