  We discuss the nonmesonic decay of deformed p-shell hypernuclei. The Nilsson
model with angular momentum projection is employed in order to take into
account the deformation effects. The nonmesonic decay rate and the intrinsic
$\Lambda$ asymmetry parameter decrease as a function of the deformation
parameter, while the ratio of the neutron- to proton-induced decay rates
increases. We find that the deformation effects change these observables by
about 10 % for $^9_{\Lambda}$Be from the spherical limit.
