| Usansolo | |
| Settlement Type: | Municipality |
| Other Name: | Usánsolo |
| Pushpin Map: | Spain Basque Country |
| Pushpin Map Caption: | Location of Usansolo within the Basque Country |
| Subdivision Type: | Country |
| Subdivision Name: | Spain |
| Subdivision Type1: | Autonomous community |
| Subdivision Name1: | Basque Country |
| Subdivision Type2: | Province |
| Subdivision Name2: | Biscay |
| Subdivision Type3: | Comarca |
| Subdivision Name3: | Greater Bilbao |
| Coordinates: | 43.2219°N -2.8186°W |
| Elevation M: | 51 |
| Area Total Km2: | 31.66 |
| Population Demonym: | Usansolotar, |
| Population Density Km2: | auto |
| Blank Name Sec1: | Official language(s) |
| Timezone: | CET |
| Utc Offset: | +1 |
| Timezone Dst: | CEST |
| Utc Offset Dst: | +2 |
| Postal Code Type: | Postal code |
| Postal Code: | 48960 |
| Area Code Type: | Dialing code |
| Leader Title: | Mayor |
| Leader Name: | Agustín Aizpuru Izaguirre |
| Leader Party: | Basque Country Unite |
Usansolo is a municipality located to the east of Galdakao (Biscay) in Spain, 2 km from the centre of the neighbouring town. With few baserris, its population began rising after the railway station was built in the 19th century, when flats started being built. It has 4570 inhabitants as of 2023. Due to its distance from the center of Galdakao, proposals to make it an independent town gathered momentum, until its independence was confirmed on 28 December 2023. Usansolo is home to a Bridgestone tire cord plant.