EK or Emma-Kate Lidbury is a female British professional triathlete who currently resides in Boulder, Colorado.

She began training for triathlons in 2005 and decided to devote her full-time to the sport in the fall of 2008.

She specialized at the Ironman 70.3 distance, winning her first titles in 2011 at 70.3 Mallorca, 70.3 UK and 70.3 Augusta.

Since retiring from professional racing she has returned to her writing and journalistic roots, co-authoring the book Triathlon Swimming with Gerry Rodrigues for VeloPress.

This biographical article relating to a United Kingdom sportsperson is a stub.