Maesycrugiau is a hamlet in the Teifi Valley in the county of Carmarthenshire, South Wales. The River Teifi is renowned as one of the best rivers in Wales for salmon fishing.
Maesycrugiau lies south east of the town of Rhydowen, south west of Llanybydder, north west of Llanllwni and east of Llandysul. Nearby towns and villages include Capel Dewi, Aber-Giâr, Llanfihangel-ar-arth.
The closest mountains are Mynydd Llanllwni (381m) and Mynydd Llanybyther (408m).