Metamaterials, Metadevices, and Metasystems is an international scientific conference focused on engineered materials and devices that control electromagnetic, acoustic, and other wave phenomena. It brings together researchers from academia and industry for technical presentations, poster sessions, and workshops at the San Diego Convention Center, highlighting advances in design, fabrication, and experimental demonstration. The meeting is notable for emphasizing translation of novel metamaterial concepts into practical metadevices and system-level applications across communications, sensing, and imaging.