M33

M33, M-33, or M.33 may refer to:

• M-33 (Michigan highway), a state highway in Michigan
• M33 cluster bomb, a Cold War-era U.S. biological cluster bomb
• HMS M33, an M29-class monitor warship of the Royal Navy
• M33 helmet, used by the Italian Army in World War II
• Macchi M.33, an Italian racing flying boat of 1925
• Miles M.33 Monitor, a 1944 twin engined British target tug aircraft
• Mike Tempesta (aka M.33), a rock guitarist
• Messier 33, or Triangulum Galaxy, a galaxy in the Local Group of galaxies
• M33 (gene)
• M33 ball, a jacketed .50_BMG ammunition cartridge
• M33, US Army rocket launcher for the Honest John rocket
• M33, the postcode district of Sale, a town in Greater Manchester, England

See also

• M33 in Andromeda, a collection of science fiction short stories by A. E. van Vogt