On 26-27 January 2017, the Thai-German Trilateral Cooperation Programme joined the NIDC Forum on Triangular Cooperation: Lesson learned and future prospect at Eastin Grand Hotel Sathorn. The NIDC is a network of scholars, practitioners and policy makers involved in international development cooperation, supported by the Asia Foundation and TRF. The sessions included speakers who provided insights from the perspectives of traditional donor’s, ; from pivotal countries’ perspectives; and from academic perspectives as well as lessons learned and policy recommendations. The forum highlighted the importance the definition, contribution, challenges, benefits, strategies, and ways of understanding Triangular Cooperation or Trilateral cooperation.