| Alternative | |
| Native Name: | Alternatiba |
| Spokesperson: | Oskar Matute |
| Ideology: | Socialism Environmentalism Feminism Anti-capitalism Left-wing nationalism Internationalism Basque independence[1] |
| Headquarters: | Plaza Venezuela, 1, 1ยบ izda., 48001 - Bilbao, Basque Country |
| Country: | Spain |
| Split: | Ezker Anitza |
| Affiliation1 Title: | Trade union affiliation |
| Affiliation1: | Langile Abertzaleen Batzordeak |
| Position: | Left-wing to far-left |
| National: | EH Bildu |
| Seats1 Title: | Basque Parliament |
| Seats2 Title: | Congress of Deputies |
Alternatiba (English: Alternative) is a Basque socialist[2] political party. Founded in 2009, Alternatiba was born as a critical tendency within Ezker Anitza, the Izquierda Unida (IU) affiliate in the Basque Country, opposing a participation in the Basque government along with the PNV and Eusko Alkartasuna. In 2009 this tendency broke away from IU and formed an independent party.