AIFS may refer to

• Auckland Integrated Fares System, a predecessor to the proposed public transport payment system for New Zealand
• Australian Integrated Forecast System (meteorology)
• American Institute For Foreign Study, est. 1964
• Arbitration Inter Frame Spacing, a method of prioritizing transmissions on a wireless network
• Associazione Italiana Football Sala, the old name for the current Federazione Italiana Football Sala
• Australian Institute of Family Studies

This disambiguation page lists articles associated with the title AIFS.
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