June Gibbons is a British writer known for being one half of the "Silent Twins," alongside her identical twin sister Jennifer Gibbons, with whom she shared an intense bond marked by selective mutism, a private language, and prolific creative output in the face of social isolation and institutionalization.

She gained recognition for her self-published novel The Pepsi-Cola Addict and for the extraordinary circumstances of her life, which have been documented in books, films, and media coverage.