Father William B. Wasson (December 21, 1923 - August 16, 2006) was an American Catholic priest. He was born in Phoenix, Arizona, United States, but moved to Mexico where he trained as a priest. In 1954, he founded Nuestros Pequeños Hermanos, a charity for orphans and neglected and abandoned children, which today operates across Latin America. Wasson died in August 2006 in Arizona, due to complications arising from a hip injury.