Kennelly is a surname. Notable people with the surname include:
Ardyth Kennelly, American novelist
Arthur Edwin Kennelly, American engineer
Barbara B. Kennelly, Connecticut Representative
Brendan Kennelly, Irish poet and novelist
Keala Kennelly, American surfer
Martin H. Kennelly, mayor of Chicago
Matthew F. Kennelly, Federal District Court Judge in Illinois
Pat Kennelly, Australian politician
Ryan Kennelly, American powerlifter
Sheila Kennelly, Australian actress
Tadhg Kennelly, Irish Gaelic football player
Tim Kennelly, Irish Gaelic football player
