[1]Benzogermolo[3,2‐b]indoles, [1]benzogermolo[3,2‐b]benzofuran, [1]benzogermolo[3,2‐b]benzothiophene, and [1]benzogermolo[3,2‐b]benzothiophene‐S,S‐dioxide were synthesized from the corresponding 3‐bromo‐2‐(2‐bromophenyl)benzoheteroles and characterized. A comparison of the absorption spectra of the Ph2Ge‐ and Ph2Si‐bridged 2‐phenylindoles reveals that the Ge bridge has the effect of slightly widening the HOMO–LUMO energy gap of the bridged 2‐phenylindole π‐system with regard to the Si‐bridged system. Replacement of the indole ring by benzofuran or benzothiophene rings induces blueshifts in the absorption spectrum, whereas the absorption spectrum of the benzothiophene‐S,S‐dioxide derivative was redshifted with respect to the indole derivative. These results are consistent with the changes in the HOMO–LUMO energy gaps calculated by using density functional theory. The Ph2Ge‐bridged indole, benzofuran, and benzothiophene‐S,S‐dioxide derivatives exhibit brilliant fluorescence in the violet‐to‐blue region with good‐to‐excellent quantum yields in toluene (λem=376–439 nm, Φ=0.62–0.99) and powder form (λem=401–451 nm, Φ=0.64–0.80).