Vahey is a surname. Notable people with this surname include:
Cristin McCarthy Vahey, American politician James H. Vahey (1871–1929), American lawyer and politician James H. Vahey Jr. (1900–1949), American lawyer and political figure John Haslette Vahey (1881–1938), Northern Irish author of detective fiction Robert Vahey (1932–2013), British actor William Vahey (1949–2014), American schoolteacher and child molester