Romilly is a surname, and may refer to:
Charles Romilly (1808–1887), English cricketer and barrister Edward Romilly (1804–1870), English amateur cricketer and MP Esmond Romilly (1918–1941), English socialist and anti-fascist, married to Jessica Mitford Frederick Romilly (1810–1887), a British Whig politician and cricketer Giles Romilly (1916–1967), English journalist, Nazi POW Hugh Hastings Romilly (1856–1892), English explorer in the Pacific Jean Romilly (1714–1796), Genevan watchmaker, journalist and encyclopédiste Jean-Edme Romilly (1739 or 40–1779), Genevan theologian and encyclopédiste, son of Jean Romilly Jacqueline de Romilly (1913–2010), French philologist John Romilly, 1st Baron Romilly (1802–1874), English judge John Romilly, 3rd Baron Romilly (1866–1905), British hereditary peer and soldier Joseph Romilly (1791–1864), English academic administrator Sir Samuel Romilly (1757–1818), English legal reformer, MP for Westminster William Romilly, 4th Baron Romilly (1899–1983), British hereditary peer