  We introduce bi-slant $\xi^{\perp}$-Riemannian submersions from Sasakian
manifolds onto Riemannian manifolds as a generalization of slant and semi-slant
$\xi^{\perp}$-Riemannian submersion. We give an example and investigate the
geometry foliations. After we obtain necessary and sufficient conditions
related to totally geodesicness of submersion. Finally we give decomposition
theorems for total manifold of such submersions.
