Dan Lilker (born October 18, 1964 in Bayside, New York) is a musician from the United States, most known as a bass player, but also guitarist, pianist, drummer and vocalist. He is the bassist for the thrash metal band Nuclear Assault and was a founding member of Anthrax with Scott Ian, (Lilker was then playing rhythm guitar) and recorded bass guitar and co-wrote on their first album, Fistful of Metal.