Menai may refer to:

• Menai, New South Wales

• Menai Bay on the island of Zanzibar, Tanzania
• Menai Island, a Cosmoledo atoll islet, Seychelles

• Menai, an electoral ward in Bangor, Wales, UK
• Menai (Caernarfon ward) in Wales, UK
• The Menai Strait in North Wales, UK
  • The Menai Suspension Bridge across the strait
  • Coleg Menai, Bangor (near the bridge)
  • Menai Bridge (Welsh: Porthaethwy), a town near the bridge
• Mineo (Ancient Greek: Μεναί, romanized: Menai), Italy

• Operation Menai Bridge, the codename for plans surrounding the death of King Charles III