  We evaluate the infinite volume, continuum limit of glueball masses in the
valence (quenched) approximation to lattice QCD. For the lightest states with
$J^{PC}$ of $0^{++}$ and $2^{++}$, we obtain $m_0 = 1340 \pm 160$ MeV and $m_2
= 1900 \pm 320$ MeV.
