DIFF or diff may refer to:

• , a file comparison tool

• Data comparison, methods and implementations to compare texts or files

• Dubai International Film Festival

• Dublin International Film Festival

• Dharamshala International Film Festival

• a motor vehicle's differential (mechanical device)

• White blood cell differential, a medical test enumerating each type of white blood cell

See also

• Help:Diff, for information on diffs of pages in Wikipedia