Effective CF3 transfer: Various electron‐rich nitrogen heterocycles (pyrazoles, triazoles, and tetrazoles) can be directly N‐trifluoromethylated by a hypervalent iodine reagent in an efficient manner. The optimized procedure, which includes an in situ silylation of the substrate followed by an acid‐catalyzed CF3 transfer, provides ready access to a series of new and previously challenging or inaccessible