Messier object M3, a globular cluster in constellation Canes Venatici.
M3 can also mean the highway in England, see M3 motorway
M3 in economics refers to the amount of cash in circulation, the amount in checking or demand-deposit accounts plus savings accounts, money market acounts, CDs and foreign-currency holdings. See money supply.
M3 is also an automobile model manufactured by BMW.External links