This thesis reports the measurement of branching ratios for the inclusive decay of a D meson to a neutrino, measured at the CLEO-c detector. It is fully inclusive as to lepton flavor and into which semileptonic mode the D decays. This analysis is the first direct measurement of the inclusive neutrino branching ratio. It utilizes 187 $pb-1$ of data taken at the $\backslash psiprime$ resonance. The measured values are $BR(D\pm \to X\nu )=29.43\%\pm 0.83\pm 1.75$, and $BR(D0\to X\nu )=13.52\%\pm 0.28\pm 0.68$.