Jeffrey Marsh (born July 7, 1977) is an American writer, actor, artist, activist, and social media personality, best known for making inspirational viral videos on Vine.
With over a quarter billion views online, Marsh has been described by CBS as "the internet's most beloved anti-bully."Marsh is genderqueer and uses the singular they as their pronoun of choice and "Mx." as a gender-ambiguous honorific.
Marsh has also identified at various times as a gay man, queer, and genderfluid.