Penryn and Falmouth was the name of a constituency in Cornwall, England, UK, represented in the House of Commons of the Parliament of the United Kingdom from 1832 until 1950. From 1832 to 1918 it was a parliamentary borough, initially returning two Members of Parliament (MPs), elected by the bloc vote system.

Penryn is a civil parish and town in west Cornwall, England, United Kingdom. It is on the Penryn River about 1 mile (1.6 km) northwest of Falmouth. The population was 7,166 in the 2001 census and had been reduced to 6,812 in the 2011 census, a drop of more than 300 people across the ten-year time gap. There are two electoral wards covering Penryn: 'Penryn East and Mylor' and 'Penryn West'. The total population of both wards in the 2011 census was 9,790.