- Native name
- Metro de Bilbao (Spanish) Bilboko metroa (Basque)
- Locale
- Greater Bilbao , Basque Country , Spain
- Transit type
- Rapid transit
- Annual ridership
- 100.3 million (2024)
- Website
- Metro Bilbao L3 - Euskotren
- Began operation
- 11 November 1995 ; 30 years ago ( 1995-11-11 )
- Operator s
- Metro Bilbao Euskotren
- System length
- 51 km (31.7 mi)
- No of tracks
- 2 (mostly) 1 (Urduliz–Plentzia)
- Track gauge
- 1,000 mm ( 3 ft 3 + 3 ⁄ 8 in ) metre gauge
- Electrification
- 1,500 V DC overhead catenary