William Trench may refer to:
- William Trench, 1st Earl of Clancarty (1741-1805), Anglo-Irish aristocrat and politician
- William Trench, 3rd Earl of Clancarty (1803-1872), Irish nobleman
- William Trench III (1831-1896), reeve of Richmond Hill, Ontario
- William Le Poer Trench (1837-1920), Anglo-Irish politician and British army officer
Famous quotes containing the word trench:
“The battle for the mind of Ronald Reagan was like the trench warfare of World War I: never have so many fought so hard for such barren terrain.”
—Peggy Noonan (b. 1950)