Spyros Gianniotis, a retired Greek swimmer, has left a lasting mark on the sport. Born in England to an English mother, he moved to Greece at age three. He began swimming lessons at age five, influenced by his mother who had been involved in the sport.

| Season | Event | Rank |
|---|---|---|
| 2016 | Men's 10km | S Silver |
| 2012 | Men's 10km | 4 |
| 2008 | Men 1500m Freestyle | 12 |
| 2008 | Men's 10km | 16 |
| 2008 | Men 400m Freestyle | 24 |
| 2004 | Men 1500m Freestyle | 5 |
| 2004 | Men 400m Freestyle | 7 |
| 2000 | Men 4 x 200m Freestyle Relay | 15 |
| 2000 | Men 400m Freestyle | Heat |
Gianniotis was voted 2012 Greek Athlete of the Year by Greek sports journalists. He also had the honour of being the first torch bearer for the 2012 Olympic Games in London. The torch was lit at the Temple of Hera in Ancient Olympia using the sun's rays.
He retired from competitive swimming in August 2016 after winning a silver medal at the Rio de Janeiro Olympics. Reflecting on his career, he said, "Every single metre of the training, every single day and hour, it's just come down to the perfect moment."
Gianniotis resides in Athens with his wife Ismini. In his leisure time, he enjoys meeting friends for coffee. His sporting philosophy is simple yet profound: "Whatever you put your mind to can be realised."
Post-retirement, Gianniotis plans to stay connected with swimming through coaching and mentoring young athletes. He aims to share his experience and knowledge to help nurture future talents in Greece.
Spyros Gianniotis' journey from a young boy taking swimming lessons to an Olympic medalist is inspiring. His dedication and achievements continue to motivate aspiring swimmers worldwide.
Spyros Gianniotis, a retired Greek swimmer, has left a lasting mark on the sport. Born in England to an English mother, he moved to Greece at age three. He began swimming lessons at age five, influenced by his mother who had been involved in the sport.