Charm Quark Mass from Inclusive Semileptonic B Decays

The MSbar charm quark mass is determined to be m_c(m_c)=1224±17±54 MeV from a global fit to inclusive B meson decay data, where the first error is experimental, and includes the uncertainty in alpha_s, and the second is an estimate of theoretical uncertainties in the computation. We discuss the implications of the pole mass renormalon in the determination of m_c.