MM or variants may refer to:
A controversy surrounding the combined measles, mumps, and rubella (MMR) vaccine started with the 1998 publication of a fraudulent research paper in The Lancet linking the vaccine to colitis and autism spectrum disorders.
The MMR vaccine (also known as the MPR vaccine after the Latin names of the diseases) is an immunization vaccine against measles, mumps, and rubella (German measles).
"MMMBop" is a song written and performed by the American pop rock band Hanson. It was released in April 1997 as the lead single from their debut full length studio album, Middle of Nowhere (1997).
“Mmm Mmm Mmm Mmm” is a song by the Canadian folk rock group Crash Test Dummies, It was released on October 1, 1993 as the lead single from their second album, God Shuffled His Feet.
72 kDa type IV collagenase also known as matrix metalloproteinase-2 (MMP-2) and gelatinase A is an enzyme that in humans is encoded by the MMP2 gene.