  I report results from the CLEO collaboration on semileptonic B decays,
highlighting measurements of the Cabibbo-Kobayashi-Maskawa matrix elements Vcb
and Vub. I describe the techniques used to obtain the recent improvements in
precision for these measurements, including the use of the b -> s gamma photon
spectrum to reduce hadronic uncertainties in semileptonic B decays. I also
report new measurements of Vcb using the inclusive semileptonic branching
fraction BF(B -> X e nu) and of Vub through study of the q^2 dependence of B ->
pi l nu and B -> rho l nu.
