Fennelly is a surname. Notable people with the surname include:
Aidan Fennelly (born 1981), Gaelic football player from Laois in Ireland Bill Fennelly (born 1957), the head women's basketball coach at Iowa State University Brendan Fennelly (born 1956), Irish former hurling manager and retired player Colin Fennelly (born 1989), Irish hurler Frank Fennelly (1860–1920), 19th-century Major League Baseball shortstop Ger Fennelly (born 1954), retired Irish sportsperson James Mathias Fennelly (1929–2000), Chairman of the Department of Philosophy, Professor of History of Religions at Adelphi University, New York Keeva Fennelly, camogie player and financial reporter Kevin Fennelly (born 1955), retired Irish hurling manager and former player Kevin Fennelly (senior), hurler from County Kilkenny Leann Fennelly, camogie player and a student, played in the 2009 All Ireland camogie final Liam Fennelly (born 1958), Irish retired sportsperson Mary Fennelly (1948–2025), Irish camogie player and administrator Michael Fennelly (hurler) (born 1985), Irish hurler Nial Fennelly (born 1942), judge of the Supreme Court of Ireland, Advocate General of the European Court of Justice from 1995 to 2000 Parker Fennelly (1891–1988), American actor who appeared in ten films, numerous television episodes and hundreds of radio programs Seán Fennelly (born 1959), retired Irish sportsperson
See also Fenella (disambiguation) Fennel Fennell Vennel