This book constitutes the refereed proceedings of 3 workshops of the 17th International Conference on Web-Age Information Management, WAIM 2016, held in Nanchang, China, in June 2016.The three workshops were as follows: • The International Workshop on Spatiotemporal Data Management and Mining for the Web (SDMMW 2016) • The International Workshop on Semi-structured Big Data Management and Applications (SemiBDMA 2016). • The International Workshop on Mobile Web Data Analytics (MWDA2016)