Chris Mosier (born 1980) is an American advocate for transgender rights and competitive triathlete, duathlete, and racewalker.

[8] While he qualified, Mosier was uncertain about his eligibility to compete in the Duathlon World Championship Race in Spain in June 2016 due to the International Olympic Committee policy around the participation of transgender athletes,[9] with specific provisions from the Stockholm Consensus in 2004.

[10] In 2015, Mosier challenged the policy,[11] resulting in the creation and adoption of new IOC guidelines for the participation of transgender athletes.

[15] In 2020 Mosier became the first openly transgender man to ever compete in an Olympic trial alongside other men; however, he was unable to finish the Racewalking event due to injury.

[18] In 2019, Mosier joined the Board of Directors of Point of Pride, a non-profit that works to benefit trans people in need through gender-affirming support programs that empower them to live more authentically.

[19] Mosier was previously the Vice President of Program Development and Community Relations for You Can Play,[20] an organization that works to ensure the safety and inclusion of all in sports - including LGBTQ athletes, coaches, and fans.

Mosier spoke about his experience with Chicago Go Pride, saying, "Competing as a woman, I thought about gender all the time, to a point where it interfered with my ability to be successful because I didn't feel comfortable at races.

[32] In 2020, Mosier competed in the US Olympic Team Trials for the 50k Racewalk event; however, he was unable to finish the race due to injury.

[35] Mosier was honored for his work in promoting trans visibility and LGBT inclusion in multisport and his commitment to advocating for all people to have the opportunity to feel safe, compete, and thrive in sports.

In 2013, Mosier was named Athlete of the Year[36] at the Compete Sports Diversity Awards in Los Angeles, California.

[37] In 2014, Mosier was named as an inductee into the National Gay and Lesbian Sports Hall of Fame, thus making him the first openly transgender man inducted.