William Glen Harold Herrington, known professionally as Billy Herrington, was an American model and pornographic film actor. In the late 2000s, his appearances in various gay pornography movies led him to become a popular Internet meme on video sharing websites such as Japan's Nico Nico Douga, where he was referred to by the sobriquet "Aniki" (兄貴, lit. "older brother").

Herrington was born in North Babylon, New York. Herrington grew up in Long Island learning karate from his father, a sensei. He had interests in boxing, wrestling and martial arts, but did not start bodybuilding until he was 24 years old, after moving to New York City.

Herrington began his erotic career when his then girlfriend surreptitiously submitted his nude pictures to Playgirl magazine. The photographs won him a "Real Men of the Month" contest and a $500 prize. His appearance in the magazine caught the eye of famed photographer Jim French, but it was two years before Herrington posed for his first Colt calendars for French. Soon after, Herrington was filming hardcore gay adult films for All Worlds Video, and appearing on mainstream TV programs such as Love Connection and the Ricki Lake talk show. In 2002, Herrington said the adult film industry helped him to understand his bisexuality. In 2016, he responded to a Twitter comment identifying him as homosexual by stating that he was straight.