Aak or AAK may refer to:

• Aak, a genre of Korean court music
• AarhusKarlshamn (operating as AAK), a Swedish producer of vegetable oils and fats
• Alliance for the Future of Kosovo, an alliance of political parties in Kosovo
• Ankave language, a language of Papua New Guinea
• Aranuka Airport in Aranuka, Kiribati
• Architectural Association of Kenya
• Armée de l'Air Khmère (Khmer Air Force, the air force of the Khmer Republic)
• Ajnad al-Kavkaz, a Chechen-led militia in the Syrian Civil War

• Rottweiler (film)
• Rottøya
• Rotula
• Rotula aquatica
• Rotula Arithmetica
• Rotuli
• Rotulidae
• Rotulo
• Rotulos
• Rotulus
• Rotuma Island Airport
• Rotuman (disambiguation)
• Rotuman People
• Rotunda at Balmoral Beach, Sydney
• Rotundabaloghia
• Rotunda (disambiguation)
• Rotunda, Edinet
• Rotunda, Edineț
• Rotunda Glacier
• Rotunda Museum
• Rotunda of the Pennsylvania Railroad Station
• Rotunda of the Winter Palace
• Rotunda, Olt
• Rotunda River (Bistrita)
• Rotunda River (Bistrița)