AUF may refer to:

• African Unification Front, an organization promoting African unity
• Agence universitaire de la Francophonie, the international educational organisation
• AMX-30 AuF1, a French self-propelled howitzer
• Angeles University Foundation, a Catholic university in Angeles City, Philippines
• Australian Ultralight Federation, now Recreational Aviation Australia, the Australian governing body for ultra-light aircraft
• Australian Underwater Federation, the peak body in Australia for underwater sports
• James Bond 007: Agent Under Fire, a video game
• Uruguayan Football Association (Spanish: Asociación Uruguaya de Fútbol)
• Workers' Youth League (Norway), (Bokmål: Arbeidernes Ungdomsfylking), the Norwegian democratic socialist youth movement
• AuF, gold(I) fluoride
• AUF1 (channel), Austrian far-right media platform
• HNRPD, a protein also known as AUF1