Upper Talley Lake (Welsh: Llyn Talyllychau Uchaf) and Lower Talley Lake (Welsh: Llyn Talyllychau Isaf)[1] are two small lakes immediately north of the village of Talley, 7 miles (11 km) north of Llandeilo in Carmarthenshire, Wales.

[3] The earthworks of a Norman motte-and-bailey castle occupy the neck of land between the two lakes.

[4] Talley Abbey is immediately to the south of the upper lake, and was founded between 1184 and 1189.

[1][6] The lower lake is surrounded by alder and willow woods and is not easily accessible.

Great crested grebes and mute swans regularly breed on the reserve.