The official language of TEDxWeekend is English. All sessions, presentations, and conversations during the event primarily take place in English. The use of English as the main language enables engaging with a diverse global community and facilitates the sharing of ideas and experiences among participants from different parts of the world. While there might be occasional interventions in other languages, having a good understanding of English is recommended to actively participate in the sessions and make the most out of your TEDxWeekend experience.