| Official Name: | Breaghwy |
| Native Name: | Irish: Bréachmhaigh |
| Native Name Lang: | ga |
| Other Name: | Breaffy |
| Settlement Type: | Village |
| Pushpin Map: | Ireland |
| Pushpin Label Position: | right |
| Pushpin Map Caption: | Location in Ireland |
| Subdivision Type: | Country |
| Subdivision Name: | Ireland |
| Subdivision Type1: | Province |
| Subdivision Name1: | Connacht |
| Subdivision Type3: | County |
| Subdivision Name3: | County Mayo |
| Unit Pref: | Metric |
| Population Density Km2: | auto |
| Coordinates: | 53.8457°N -9.2368°W |
| Elevation M: | 49 |
| Blank Name: | Irish Grid Reference |
Breaffy, officially Breaghwy (;),[1] is a village in County Mayo, Ireland. It is 3.7km southeast of Castlebar, the county town. The village is in the townland and civil parish of Breaghwy.[1]
The Shamrock Bar, a small pub, is located next to St. Aloysius' Roman Catholic Church, which was built in 1978 replacing a 19th-century church. St. John's National School is opposite and is composed of the original school building from 1890, now used as a community centre, and a modern school building that has been developed since the 1990s and has 308 pupils. The four star Breaffy House Hotel is located in a wooded area to the side of the village. The hotel was previously the home to the Browne family, the landlords of the area until the mid-20th century.
The village also features a 19th-century post office and schoolteachers residence, both of which are now disused. Breaffy also has a Gaelic Athletic Association pitch. The Breaffy GAA teams are the Mayo County "A" minor Champions and County under-21 B Champions.