William O'Brien

William O'Brien is the name of the following people:

William O'Brien, 4th Earl of Inchiquin (1700–1777), Irish politician
William O'Brien (politician, 1852) (1852-1928), Irish politician
William O'Brien (Admiral) (born 1916), British admiral
William O'Brien (politician, 1918) (1918-1994), Irish politician
William B. O'Brien († 2014), American priest and addiction therapist
William David O'Brien (1878–1962), American clergyman, auxiliary bishop in Chicago
William J. O'Brien (1836-1905), American politician
William L. O'Brien (* 1951), American lawyer and politician
William Smith O'Brien (politician, 1803) (1803–1864), Irish politician
William Smith O'Brien (Politician, 1862) (1862–1948), American politician (West Virginia)
William X. O'Brien (1881–1968) Irish politician

William O'Brien referred to