of catalysis at dinuclear PdI sites, we herein report the application of this concept to the realization of the first catalytic method to convert aryliodides into the corresponding ArSeCF3 compounds. HighlyefficientCSeCF3 coupling of a range of aryliodides was achieved, enabled by an air‐, moisture‐, and thermally stable dinuclear PdI catalyst. The novel SeCF3‐bridged dinuclear PdI complex 3 was