Since 2011, IJCAI has had a special "Sister Conference Best Paper Track" for presentations of best papers from a broad range of conferences that are of interest to an AI audience. The intent of this track is to celebrate the best work, give it exposure to a more general audience, and foster collaboration within the research communities. Since its inception, the Sister Conference Track has become one of the most popular tracks at IJCAI, and we will be organizing it again at IJCAI-17.