Rathvilly is a village, civil parish and townland in County Carlow, Ireland. The village is on the River Slaney, near the border with County Wicklow and County Kildare, 11 km from Tullow and 8 km from Baltinglass. It is also on the N81 national secondary route. Rathvilly won the Irish Tidy Towns Competition in 1961, 1963, and 1968.