A complete set of invariants
(generalized Pontrjagin numbers) for rational oriented orbifold cobordism is
determined. Using these numbers we prove that for any odd dimensional oriented
orbifold 𝒬 there is a nonzero multiple of 𝒬 which bounds another orbifold and that,
unlike the manifold case, this need not be true for 4k + 2 dimensional orbifolds. In
addition we construct generators for the rational orbifold cobordism ring and show
that it is a free commutative ring on these.