Katie Zaferes is an American professional triathlete from Hampstead, Maryland, USA. Attending University at Syracuse, she first ran track before moving into ITU triathlon competitions.

Competing in World Triathlon events since 2013, Katie’s career has gone from strength to strength, reflected in her recent overall WTS rankings. Finishing the 2015 season in fifth place, her impressive consistency saw her climb one ranking place every subsequent year before finally winning the 2019 World Championships at the Lausanne Grand Final, recovering from a major bike crash at the Tokyo Test Event to take the tape and the title.

In 2021, Katie was part of the USA Mixed Relay Team that won Olympic silver at Tokyo 2020, just days after winning the individual bronze.

Highlights:
- Tokyo 2020 Mixed Relay silver
- Tokyo 2020 Individual bronze

- 2019 ITU World Champion
- Winner 2019 WTS Abu Dhabi
- Winner 2019 WTS Bermuda
- Winner 2019 WTS Yokohama
- Winner 2019 WTS Montreal
- Winner 2019 Grand Final Lausanne