  This article reports world averages of measurements of $b$-hadron,
$c$-hadron, and $\tau$-lepton properties obtained by the Heavy Flavor Averaging
Group using results available through summer 2016. For the averaging, common
input parameters used in the various analyses are adjusted (rescaled) to common
values, and known correlations are taken into account. The averages include
branching fractions, lifetimes, neutral meson mixing parameters, \CP~violation
parameters, parameters of semileptonic decays and CKM matrix elements.
