ESN Portugal, also known as the Erasmus Student Network Portugal, is a non-profit organization that belongs to the Erasmus Student Network (ESN), the largest student organization in Europe. Recognized and supported by the European Commission, ESN Portugal has more than 500 young volunteers working towards creating a more mobile and flexible education environment. They support and develop youth exchanges on various levels, providing guidance to around 14,000 participants in mobility programs in Portugal.

ESN Portugal organizes recreational, cultural, social, sportive, and civic activities that promote causes such as environmental sustainability, social inclusion, health and wellbeing, culture, employability, education, and youth. These activities aim to facilitate the integration of international students into local communities and provide assistance whenever needed. ESN Portugal is legally registered since 2009 and operates in 14 Portuguese cities through 13 sections.

They are supported by the Portuguese National Agency of Erasmus+ Education and Training. Overall, ESN Portugal strives to enrich society through international students and promote intercultural understanding