Abstract: Transition metal dichalcogenides (TMDs) show great advantages in electromagnetic wave (EMW) absorption due to their unique structure and electrical properties. Tremendous research works on TMD-based EMW absorbers have been conducted in the last three years, and the comprehensive and systematical summary is still a rarity. Therefore, it is of great significance to elaborate on the interaction among the morphologies, structures, phases, components, and EMW absorption performances of TMD-based absorbers. This review is devoted to analyzing TMD-based absorbers from the following perspectives: the EMW absorption regulation strategies of TMDs and the latest progress of TMD-based hybrids as EMW absorbers. The absorption mechanisms and component-performance dependency of these achievements are also summarized. Finally, a straightforward insight into industrial revolution upgrading in this promising field is proposed.