Invasion of Italy may refer to:

• The Lombard invasion of Italy, from 568
• The Allied invasion of Italy, 3–17 September 1943
• The German invasion of Italy, Operation Achse, 8–19 September 1943

• Union Township, Vanderburgh County, Indiana
• Union Township, Van Wert County, Ohio
• Union Township, Wells County, Indiana
• Union Township, White County, Indiana
• Union Township, Whitley County, Indiana
• Union Township Works II
• Union Treiziste Catalane
• Union Triade
• Union-Tribune
• Union Trust Building (Pittsburgh)
• Union Turnpike
• Union Turnpike (IND Queens Boulevard Line)
• Union Turnpike-Kew Gardens (IND Queens Boulevard Line)
• Union Turnpike (New York)
• Union Turnpike (Queens)
• Union Turnpike–Kew Gardens (IND Queens Boulevard Line)
• Union Underground
• Union Underwear
• Union University (Jackson, Tennessee)
• Union University (Jackson, TN)
• Union University (New York)
• Union University (Tennessee)
• Union (U.S. Civil War)
• Union Vale
• Union Valley Lake