The N83 road is a national secondary road in Ireland. It runs (north to south) from its junction with the N17 just south of Ireland West Airport in County Mayo to a point just north of Tuam, County Galway, where it rejoins the N17. On 27 September 2017, the old N17 from the Kilmore Roundabout in Tuam to the junction with the N6 in Galway city was redesignated as part of the N83. The total length of the road is 87.5 km (54.4 mi).
The route passes through the following primary destinations: County Mayo (leaves the N17 south of Ireland West Airport, passes through Tooreen, Ballyhaunis, where it joins and leaves the N60), County Roscommon (Cloonfad), and County Galway (Dunmore, Brownsgrove, Tuam, Claregalway), terminating at the N6 east of Galway. The road is classified as a national secondary road (Irish: bóthar náisiúnta den dara grád), a category of road in Ireland that forms an important part of the national route network but is secondary to the main arterial routes classified as national primary roads.
