Afon Meillionen (Welsh for Clover River) is a small river near Beddgelert in Gwynedd, north-west Wales.

It flows down Cwm Meillionen, a small valley which lies on the north-eastern side of Moel yr Ogof (655m). Much of the river's catchment area lies within Beddgelert Forest.

Afon Meillionen is a tributary of the Afon Colwyn, which itself joins the Afon Glaslyn in the village of Beddgelert.

"Meillionen" is also the name of a farmhouse in the Cwm and of a small halt on the Welsh Highland Railway between Caernarfon and Porthmadog.

• Washington's 29th legislative district
• Washington's 2nd legislative district
• Washington's 2nd Legislative District
• Washington's 30th legislative district
• Washington's 31st legislative district
• Washington's 32nd legislative district
• Washington's 33rd legislative district
• Washington's 34th legislative district
• Washington's 35th legislative district
• Washington's 36th legislative district
• Washington's 37th legislative district
• Washington's 38th legislative district
• Washington's 39th Legislative District
• Washington's 39th legislative district
• Washington's 3rd Legislative district
• Washington's 3rd legislative district
• Washington's 3rd Legislative District
• Washington's 40th legislative district
• Washington's 41st legislative district
• Washington's 42nd legislative district
• Washington's 43rd Legislative district
• Washington's 43rd legislative district
• Washington's 44th legislative district
• Washington's 45th legislative district
• Washington's 46th legislative district