Hughes Hall is a constituent college of the University of Cambridge in England. It is the oldest of the University of Cambridge's postgraduate colleges. The college also admits undergraduates, though undergraduates admitted by the college must be aged 21 or over. There is no age requirement for postgraduate students. The majority of Hughes Hall students are postgraduate, although nearly one-fifth of the student population comprises individuals aged 21 and above who are studying undergraduate degree courses at the university.