VAM is a three-letter abbreviation which may refer to:
- Value Added Material - trade jargon in the DVD production industry for all material on a DVD that is in addition to the main film: trailers, "making of" documentaries, director's comments etc.
- Value-added modeling - an American method of teacher evaluation, using a comparison of students' current vs. previous year's test scores.
- Vesicular arbuscular mycorrhiza - a variant of arbuscular mycorrhiza fungus
- Vitt Ariskt Motstånd - a militant neo-nazi group active in Sweden between 1991 and 1993
- Vehiculos Automotores Mexicanos - a Mexican government-owned automaker
- A name on slash fiction fan sites for the real person slash pairing of Finnish heavy metal singer Ville Valo and American skateboarder and actor Bam Margera
- The Italian abbreviation for Mean ascent velocity - velocità ascensionale media - a term for the average ascent speed of bicycle racers
- Vinyl acetate monomer - a chemical component used for the manufacture of various plastics
- Vallourec and Mannesmann - VAM is the trademark for their oilfield tubing-connection screwthread
- A series of catalog numbers, named after numismatic historians Leroy Van Allen and George Mallis, which is used in US numismatics to document minting varieties of Morgan and Peace dollars.