Lightweight porous materials for electromagnetic interference (EMI) shielding applications are reviewed. EMI shielding refers to the capability of a material to protect from electromagnetic fields (EMFs) generated by electronic devices. Traditionally conducting metals are used in EMI shielding applications, which are slowly being replaced by conducting polymer-based shields. This review is narrowly focused on understanding the approaches related to porous high EMI shielding composite materials that have very low-density values. While conducting fillers can