This book constitutes the refereed proceedings of the Third International Conference on Future Data and Security Engineering, FDSE 2016, held in Can Tho City, Vietnam, in November 2016.
The 28  revised full papers and 7 short papers presented were carefully reviewed and selected from 128 submissions. The accepted papers were grouped into the following sessions:

 Advances in query processing and optimization

 Big data analytics and applications

 Blockchains and emerging authentication techniques

 Data engineering tools in software development

 Data protection, data hiding, and access control

 Internet of Things and applications

 Security and privacy engineering

 Social network data analytics and recommendation systems