Preston Crowmarsh

infobox UK place
country = England
latitude= 51.6127
longitude= -1.1107
official_name= Preston Crowmarsh
population=
civil_parish= Benson
shire_district= South Oxfordshire
shire_county = Oxfordshire
region= South East England
constituency_westminster= Henley
post_town= WALLINGFORD|postcode_district = OX10
postcode_area= OX |dial_code=
os_grid_reference= SU616908

Preston Crowmarsh is a hamlet in the civil parish of Benson in the English county of Oxfordshire. It lies on the banks of the Thames, north of Wallingford. The river can be crossed on foot here at Benson Lock.