Marc Steven Alessi (born July 1976) is an American attorney and entrepreneur from Shoreham, New York, who formerly served in the New York State Assembly. He currently holds positions as Executive Director of Tesla Science at Wardenclyffe, Executive Director of the Business Incubator Association of New York State, Founder/CEO of SynchroPET, and attorney at the firm of Campolo, Middleton & McCormick LLP. Alessi was born in Brooklyn, New York, and grew up on Long Island. His father, a union printer, emigrated from Italy at the age of nine, and his mother worked and raised six children.