The M50 motorway is a motorway in the Republic of Ireland. It runs around three sides of Dublin, starting in the north east, then passing west of the city, and through the only motorway toll in the country, to meet the M11 motorway south east of the capital.


There is also an M50 motorway in England. It runs twenty miles westward from the M5 motorway just north of Tewkesbury, to meet the A40 road and A449 road at Ross-on-Wye.