Adai may refer to:

• Adai people
  • Adai language
• A type of Dosa, a South Indian crêpe
• A minor Kazakh Jüz "horde", numbering ca. 80-90,000
• Adai Khan, Mongol khan of Northern Yuan Dynasty
• Adai, FATA, a town in the Federally Administered Areas of Pakistan
• ADAI Droiders, A Company that creates Generic Apps for Android (operating system) - US Based

• Selfie (2018 film)
• Selfie deaths
• Selfie drone
• Selfie elbow
• Selfie (film)
• Selfie Raja (film)
• Selfies in Aleppo
• Selfie wrist
• Self-incompatibility in plants
• Self-incompatible flower
• Self-indulgent
• Self Inflicted (album)
• Self Inflicted (Chelsea Grin Album)
• Self-Inflicted Wounds
• Self-information
• Self-injurious
• Self-interaction
• Self-interactions
• Self-intersecting polygon
• Self Interview
• Self Interview (song)
• Self-invested personal pension
• Selfish Age
• Selfish (book)
• Selfish DNA