The 2015 IEEE Swarm Intelligence Symposium (IEEE SIS'15) will be held in Cape Town, South Africa, December 07 - 10, 2015. It will be a part of the IEEE Symposium Series on Computational Intelligence 2015, which consists of over 20 symposia. The theme of the SIS 2015 is to provide a platform for researchers, academicians, students, engineers, and government officers from all over the world to share and exchange information in the swarm intelligence research areas ranging from algorithm development to real-world applications. Authors are invited to submit their original and unpublished work related to swarm intelligence, including research, theory, development, and applications.