Riad or Riyad may refer to:
- Riyadh, the capital city of Saudi Arabia
- Riyad, Mauritania
- Riad (name), a given name and surname (including a list of people with the name, also Riyad or Riyadh)
- Moroccan riad, a traditional Moroccan house or palace with an interior garden or courtyard
- Hadith Bayad wa Riyad, an Arabic love tale
- Riad N' The Bedouins, a song by Guns N' Roses appearing on their 2008 album Chinese Democracy
- Radiation and Isotope Applications Division, a research division of the Pakistan Institute of Nuclear Science and Technology