The first spectra of the A 2Π3/2 ← X 2Π3/2 electronic transition of BrO using Fourier transform ultraviolet spectroscopy are obtained. Broadband vibrational spectra acquired at 298 ± 2 K and 228 ± 5 K, as well as high-resolution rotational spectra of the A ← X 7,0 and 12,0 vibrational bands are presented. Wavenumber positions for the spectra are obtained with high accuracy,...