[en] We calculate the glueball mass spectrum in the SU(3) lattice regularized gauge theory. We find four light glueballs: the 0⁺⁺, 2⁺⁺, 0^-+, and, most interestingly from the experimental point of view, the oddball 1^-+. We calculate the 0⁺⁺ and 2⁺⁺ masses over a range of β values and find that both states conform to continuum renormalization group behaviour to a very significant degree. The question of metastable states and temperature is addressed in detail. Finally we discuss and resolve contrary claims in the recent literature. (orig.)