Related to the big theme of the SDGs reinforcement at our previous conference, we try to invite all academics and researchers around the world to participate in the 3rd Borobudur International Symposium 2021 (3rd BIS 2021). As we know, the COVID-19 pandemic and its impact on all the 17 SDGs have demonstrated how what began as a health catastrophe swiftly transformed into a human, socioeconomic and environmental crisis. The 3rd BIS brought up “Decade of Action towards Climate Change Issues: Advancing the Innovation to Recover our Planet” as the main theme to respond this condition. This conference is expected to support the UN Agenda, especially on clean water and sanitation; affordable and clean energy; industry, innovation and infrastructure; sustainable cities and communities; responsible consumption and production; climate action; life below water; and life on land. The conference will be held on Wednesday, December 15th, 2021 in Magelang, Central Java, Indonesia.