DIFF or diff may refer to:

Look up diff in Wiktionary, the free dictionary.

• diff, 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

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

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