PASTIS-3D -- A parallel finite element projection code for the time-dependent incompressible Navier-Stokes equations PASTIS-3D (Projection Algorithm Solver for Time-dependent Incompressible flow Simulations in 3 Dimensions) is a computer program for the solution of the incompressible time-dependent Navier-Stokes equations. It uses the implicit projection-2 algorithm, which is second order accurate for the velocities. It works with a data parallel variant of the conjugate gradient method and runs efficiently on parallel systems such as workstation clusters and the IBM scalable POWER parallel systems (9076 SPx). The parallel data structure is familiar from domain decomposition. But, we use a parallel implementation of a sequential algorithm and hence obtain the desired sequential results.