  By considering suitable Poisson groupoids, we develop an approach to obtain
Lie group structures on (subgroups of) the Poisson diffeomorphism groups of
various classes of Poisson manifolds. As applications, we show that the Poisson
diffeomorphism groups of (normal-crossing) log-symplectic, elliptic symplectic,
scattering-symplectic and cosymplectic manifolds are regular
infinite-dimensional Lie groups.
