High-resolution rovibrational absorption spectra of the weakly bonded OCBr2 complex have been observed in the region of the C=O stretching mode in the 2143-cm(-1) region. Four progressions originating from different bromine isotopic species were recorded. The spectra, which are consistent with a linear complex, were well fitted by a semirigid rotor Hamiltonian. The top five parameters in Table 2 were determined. The distances from the Br-2 bond center to the CO center of mass are 4.884 and 4.893 Angstrom for the ground and excited states, respectively. Though the orientation of the CO has not been determined experimentally, we presume that it is similar to OCCl2, namely, the halogen is bonded to the carbon atom.