| Country: | ESP |
| Type: | N |
| Route: | 240 |
| Map Custom: | yes |
| Length Km: | 301.28 |
| Terminus A: | Tarragona |
| Junction: | Lleida, Huesca, Jaca, Vitoria-Gasteiz |
| Terminus B: | Bilbao |
The N-240 is a major east–west road in Spain. Originally running from Tarragona to Bilbao, several segments have been downgraded due to the construction of parallel motorways.
The road heads southeast from Bilbao over the Barazar pass to Vitoria-Gasteiz. The segment from Luko to Vitoria-Gasteiz has been upgraded to autovía standards. From Alsasua to Pamplona the road was known as, but the stretch between Alsasua to Irurtzun has been upgraded to the Autovía A-10.[1] From Pamplona to Jaca, the Autovía A-21 is being built parallel to the old N-240.[2] The Navarrese section parallel to the A-21 has been renamed as NA-2420.[3]
From Huesca to Lleida the N-240 runs parallel to the Autovía A-22.[4] In the last section, between Montblanc and Tarragona, the Autovía A-27 is being built as an alternative to the old N-240.[5]