Festing is a surname. Notable people with the surname include:
Major-General Edward Robert Festing (1839–1912), Royal Engineer, chemist, and first Director of the Science Museum in LondonField Marshal Sir Francis Wogan Festing (1902–1976), British field marshalColonel Francis Worgan Festing (1833–1886), British Royal Marines officerJohn Wogan Festing (1837–1902), English clergyman who became Bishop of St AlbansFra' Matthew Festing (born 1949), English Grand Master of the Sovereign Military Order of MaltaMichael Festing, British research scientistMichael Christian Festing (1705–1752), English violinist and composerSimon Festing, British activist and executive director of the Research Defence Society