The Fortieth Door
Geological Exploration of the Fortieth Parallel
Fortieth term for President of the United States
Fortieth Army (Japan)
Washington Crossing Bridge (Pittsburgh)
2024 Irish constitutional referendums
40th parallel north
40th ward, Chicago
Doctor Who series 14
40th United States Congress
Army of Two: The 40th Day
Connecticut's 140th House of Representatives district
List of amendments of the Constitution of India
List of MPs elected in the 1951 United Kingdom general election
40th Street station (Market–Frankford Line)
Symphony No. 40 (Mozart)
40th Street Portal
1955 United Kingdom general election
South Dakota
Ronald Reagan
Presidency of Ronald Reagan
Gerald Ford
40th century BC