Llangybi shown within Ceredigion
|OS grid reference|
|Sovereign state||United Kingdom|
|Fire||Mid and West Wales|
Llangybi is a village and parish in the south of Ceredigion, Wales. It is located on the A485 between Tregaron to the north and Lampeter to the south, a mile and a half north of the village of Betws Bledrws.
Llangybi is one of three villages in Wales named after Saint Cybi. The local church is also dedicated to Saint Cybi, which currently lies within the deanery of Lampeter of the diocese of Saint David's, and was at one time in the alternate patronage of the Earl of Lisburne and Lord Carrington.
Llangybi railway station was located on the Carmarthen to Abserystwyth line, closing in February 1965.
Notable residents 
- David Davis (Dafis Castellhywel), born at Goetre farmhouse in 1745.
- T. D. Breverton, The Book of Welsh Saints (Cyhoeddiadau Glyndŵr, 2001), d.g. Cybi.