Rhiannon (disambiguation)

Rhiannon is a queen in Welsh mythology.

Rhiannon may also refer to:

• Rhiannon (given name), a Welsh given name
• Lee Rhiannon (born 1951), Australian politician
• "Rhiannon" (song), a 1975 Fleetwood Mac song
• ', a 2008 video adventure game
• 16912 Rhiannon, an asteroid