The Mondragon Corporation is a corporation and federation of worker cooperatives based in the Basque region of Spain.

It was founded in the town of Mondragon in 1956 by José María Arizmendiarrieta and a group of his students at a technical college he founded. Its first product was paraffin heaters.

It is the seventh-largest Spanish company in terms of asset turnover and the leading business group in the Basque Country. At the end of 2016, it employed 74,117 people in 257 companies and organizations in four areas of activity: finance, industry, retail and knowledge. By 2019, 81,507 people were employed. Mondragon cooperatives operate in accordance with the Statement on the Co-operative Identity maintained by the International Co-operative Alliance.