Daniel John Mullen (born 26 October 1989) is an Australian footballer who currently plays for the Newcastle Jets. His natural position is at centre back but he plays regularly at right back at club level. Daniel is the cousin of Matthew Mullen and son of former Socceroo Joe Mullen. In his first game for Australia he became the first Socceroo to wear a 3 digit number wearing 107 against Kuwait on 6 March 2009.