A novel tetraphenylethylene (TPE)–bridge–tetraphenylethylene triad has been synthesized, where the o‐carboranyl moiety functions as a central bridge and two TPE units are in the lateral positions. This molecular triad has been characterized by various spectroscopic methods, and its structure has been studied by X‐ray crystallography as well as theoretical calculations. The impact of the bridging carboranyl unit on the aggregation‐induced emission (AIE) characteristics of the TPE–bridge–TPE triad has been investigated. When the central bridge is changed from one‐dimensional (1D) alkynyl to three‐dimensional (3D) carboranyl, the absolute luminescent quantum yield of the triad increased from 21.2 % to 54.7 % in the solid state, accompanied by a luminescence color change from blue to yellow (94 nm red‐shift). Building bridges: The impact of a carboranyl linker on the AIE characteristics of tetraphenylethylene (TPE)–bridge–TPE has been investigated. The luminescent quantum yield can be tuned from 21.2 % to 54.7 % in the solid state, and a red‐shift emission of 94 nm is observed. [ABSTRACT FROM AUTHOR]