AFF, Aff or aff may refer to:

Organizations

• Afghanistan Football Federation, the governing body of football in Afghanistan
• Afghanistan Freedom Front, an anti-Taliban militant group
• Animal Farm Foundation, an advocacy group for pit bulls and against BSL
• Arab Film Festival, a California nonprofit that hosts the largest Arab film festival in the US
• Armed Forces Foundation, a military non-profit support group
• ASEAN Football Federation, a subset of nations within the Asian Football Confederation from Southeast Asia
• Aspies For Freedom, a group advocating autism rights
• Austin Film Festival, a film festival in Austin, Texas
• Australian Fencing Federation, the governing body of the Olympic sport of fencing in Australia

Transport

• Affluence stop, MTR station code "AFF"
• United States Air Force Academy, which has the IATA airport code "AFF"

Other uses

• A Fine Frenzy, a singer
• Accelerated freefall, a method of skydiving training
• Adult FriendFinder, a commercial dating website
• Advance-fee fraud, a confidence trick in which the target is persuaded to advance relatively small sums of money in the hope of realizing a much larger gain
• Advanced Fighting Fantasy, a British fantasy tabletop roleplaying game
• aff., an abbreviation for affinis in biological open nomenclature
• Aff (river), in western France
• Affine group, ${\displaystyle \operatorname {Aff} }$ is used to represent the group of affine transformations on a space
• Automated Flight Following (AFF), a US Department of Agriculture system to track firefighting aircraft

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