Z1, Z-1, or Z.1 may refer to:
Government and economics
Z.1 or the Flow of Funds, a U.S. government fiscal report
Military and aerospace
Admiralty scaffolding, an anti-tank barrier also known as Z.1 Z-1 Suit, an experimental space suit AEG Z.1, a German aircraft built before World War I from Zagreb German destroyer Z1 Leberecht Maass, a World War II destroyer Goodyear Z-1, N-class blimps of the U.S. Navy HZ-1 Aerocycle, an experimental U.S. Army flying platform of the 1960s
Transportation
Z1 class Melbourne tram, a single-unit bogie tram built between 1975 and 1983 Great Northern Railway Z-1 class, a class of electric locomotives used by the Great Northern Railway (U.S.) NER Class Z1, a class of British steam locomotives (redesignated class Z in 1914) Z1 (train service code), the train code for high-speed train between Shanghai and Beijing
Road
BMW Z1, a two-seat roadster Kawasaki Z1, a motorcycle
Computers and technology
Z1 (computer), a mechanical computer designed by Konrad Zuse from 1935 to 1936 Sony HVR-Z1, a HDV format camcorder manufactured by Sony Sony Xperia Z1, a smartphone manufactured by Sony
Media and entertainment
Television Z1 TV, a Czech TV channel Z1 Zagrebačka Televizija, a Croatian regional television network
Video games
Z-1 (comics), a DC comics character Z1 Battle Royale, a 2018 video game Zork I, an interactive fiction computer game
Music Z-1 (band), a Japanese idol group
Organizations
Z1 Digital Studio, an international digital product studio based in Seville
People
Frederick Vanden Heuvel, British intelligence officer
See also 1Z (disambiguation)