The N-135 is a highway in Spain.

National road N-135 shield}}
National road N-135
Carretera nacional N-135
Route information
Length59.14 km (36.75 mi)
Major junctions
FromPamplona
ToRoncesvalles
Location
CountrySpain
Major citiesZubiri, Erro, Aurizberri, Auritz, Roncesvalles, Luzaide
Highway system

It starts north of Pamplona with a junction on N-121 and Autovía A-15.

The N-135 heads north up the valley of Rio Arga and the Puerto Ibañeta (1,057m) near Roncesvalles. It then enters France 8 km (5.0 mi) south of St Jean Pied de Port.