Denis O'Connor

Denis O'Connor may refer to:


 * Sir Denis O'Connor (British Army officer) (1907–1988), British general
 * Sir Denis O'Connor (police officer) (born 1949), British police officer
 * Denis O'Connor (bishop) (1841–1911), Roman Catholic Archbishop of Toronto
 * Denis O'Connor (British-Irish sculptor), sculptor
 * Denis O'Connor (sculptor) (born 1947), New Zealand ceramicist, sculptor and writer