The paper presents results of a systematic NMR studies on fluorinated phenylboronic acids. All possible derivatives were studied. The experimental ¹H, ¹³C, ¹⁹F, ¹¹B, and ¹⁷O spectral data were compared with the results of theoretical calculations. The relation between the calculated natural bond orbital parameters and spectral data (chemical shifts and coupling constants) is discussed. The first examples of ¹⁰B/¹¹B isotopic effect on the ¹⁹F spectra and ⁴J_FO scalar coupling in organic compounds are reported.