Christopher Paul Day CBE DL (born February 1960^[2]) is a British hepatologist who is Vice-Chancellor of Newcastle University.

Educated at Marden High School, Tynemouth Sixth Form College and Churchill College, Cambridge, Day became a clinician at the Freeman Hospital in Newcastle upon Tyne in 1985 and a research scientist in liver disease at Newcastle University in 1987.^[3] He went on to be Consultant Hepatologist on the Liver Unit at the Freeman Hospital in 1994 before becoming Professor of Liver Medicine at Newcastle University in 2000.^[4] He became head of the School of Clinical Medical Sciences at Newcastle University in 2004, Pro-Vice-Chancellor in 2007 and Vice-Chancellor in January 2017.^[5] He also became chair of the Russell Group of universities in September 2023.^[6]

Day was appointed Commander of the Order of the British Empire (CBE) in the 2023 New Year Honours for services to health research and treatment.^[7] He is also a Deputy Lieutenant of Tyne and Wear.^[8]