Boscawen is a surname of Cornish origin, derived from Boscawen-Un. Notable people with the surname include:
Arthur Boscawen (1862–1939), Cornish gardener, horticulturist and clergyman Charles Boscawen (1627–1689), English politician Edward Boscawen (1628–1685), English politician Edward Boscawen (1711–1761), British admiral, third son of Hugh Boscawen, 1st Viscount Falmouth Edward Boscawen, 1st Earl of Falmouth (1787–1841), British peer and politician Evelyn Boscawen, 6th Viscount Falmouth (1819–1889), horse breeder and classic race winner Evelyn Boscawen, 7th Viscount Falmouth (1847–1918), British army officer George Boscawen, 3rd Viscount Falmouth (1758–1808), British army officer and statesman George Boscawen, 2nd Earl of Falmouth (1811–1852), British peer and politician George Boscawen, 9th Viscount Falmouth (1919–2022), British peer Hugh Boscawen, 1st Viscount Falmouth (c. 1680–1734), British peer and politician Hugh Boscawen, 2nd Viscount Falmouth (1707–1782), British peer and politician Hugh Boscawen (1625–1701), British peer and politician