National road N-123
Carretera nacional N-123
Route information
Length	35 km (22 mi)
Major junctions
From	Benabarre
To	Barbastro
Location
Country	Spain
Highway system
Highways in Spain Autopistas and autovías National Roads

The N-123 is a short highway in northern Spain which connects Benabarre to Barbastro.

The road starts in Benabarre with a junction with the N-230. It heads west past the Embalse de Barasona north of the Sierra de Carrodilla. It then follows the Rio Cinca south before meeting the N-240 at Barbastro.