By the significant roles of computers and computer systems in both military and governmental issues, related to these, electronic and cyber warfare subject has become a huge subject to learn search and discuss. In this paper, the definitions of both electronic warfare (EW) and cyber warfare (CW) will be explained, historical examples around the world will be given and the both similarities and differences will be discussed. Editor: H. Kemal İlter, Ankara Yıldırım Beyazıt University, Turkey Received: August 19, 2018, Accepted: October 18, 2018, Published: November 10, 2018 Copyright: © 2018 IMISC Küçükayan et al. This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.