Semantic Computing (SC) is Computing based on Semantics (“meaning”, "context", “intention”). It addresses all types of resource including data, document, tool, device, process and people. The scope of SC includes analytics, semantics description languages and integration, interfaces, and its applications in biomed, IoT, cloud computing, SDN, wearable computing, context awareness, mobile computing, search engines, question answering, big data, multimedia, services, etc. The technical program of the Ninth IEEE International Conference on Semantic Computing (ICSC 2015) will include workshops, invited keynotes, paper presentations, panel discussions, demonstrations, and more. Submissions of high-quality papers describing mature results or ongoing work are invited.