Joseph Sitt is an American real estate investor, founder of the retail chain Ashley Stewart, and founder of global real estate company Thor Equities. He was born in 1964 near Coney Island, Brooklyn to a Syrian Jewish family. He began working at a young age in flea market booths and became interested in real estate at age 11. Sitt founded Thor Equities in 1986 before graduating from New York University's Stern School of Business.