Peter Nicholson

Peter Nicholson may refer to:
 * Peter Nicholson (architect) (1765–1844), British architect, mathematician and engineer
 * Peter Nicholson (cartoonist) (born 1946), Australian cartoonist, caricaturist and sculptor
 * Peter M. Nicholson (1919–1986), former political figure in Nova Scotia, Canada
 * Peter John Nicholson (born 1942), former political figure in Nova Scotia, Canada