DMF
DMF may refer to:

Science and technology
Chemistry
Dimethylformamide, a common solvent
Dimethyl fumarate, a small molecule anti-inflammatory human medicine
2,5-Dimethylfuran, a liquid biofuel

Computing
Distribution Media Format, the computer floppy disk format
DivX Media Format, the media container format
Death Master File, a document listing deaths in the US

Medicine
Decay-missing-filled index for assessing dental caries prevalence as well as dental treatment needs among populations
Drug Master File, a document in the pharmaceutical industry

Other technology
Digital microfluidics, a fluid handling technique
Dual-mass flywheel, a rotating mechanical device

Other uses
Danish Musicians' Union, a Danish trade union
Defensive midfielder, in association football