A manifold is an abstract mathematical space which, in a close-up view, resembles the spaces described by Euclidean geometry. Manifold may also refer to: Arts and music Manifold (comics), a fictional character in Marvel Comics publications Manifold Records, a record label Manifold Trilogy, by science fiction author Stephen Baxter Engineering Manifold (fluid mechanics), a machine element used to split or combine a gas or liquid Hydraulic manifold, a component used to regulate fluid flow in a hydraulic system, thus controlling the transfer of power between actuators and pumps Manifold (scuba), in a scuba set, connects two or more diving cylinders Vacuum gas manifold, a piece of apparatus used in chemistry to manipulate gases Exhaust manifold, an engine part which collects the exhaust gases from multiple cylinders into one pipe Inlet manifold or "intake manifold", an engine part which supplies the air or fuel/air mixture to the cylinders Mathematics Manifold, an abstract mathematical space which, in a close-up view, resembles the spaces described by Euclidean geometry. Manifold (magazine), a former magazine of the University of Warwick mathematical community Topological manifold, a topological space which is a locally Euclidean Hausdorff space Almost complex manifold Algebraic manifold Analytic manifold Calabi–Yau manifold Complex manifold, a manifold over the complex numbers Differentiable manifold Einstein manifold Flag manifold Flat manifold G2 manifold Hermitian manifold Iwasawa manifold Orientable manifold People John Manifold (1915–1985), Australian poet and critic Sir Walter Manifold (1849–1928), Australian grazier and politician Places Manifold, Pennsylvania, US River Manifold, a river in Staffordshire, West Midlands, England Manifold Way, a footpath and cycleway following the route of a former railway Science Manifold (fluid mechanics), a machine element used to split or combine a gas or liquid various applications such as automotive exhaust manifolds: see Engineering section Vacuum manifold, in quantum field theory Software Manifold System, a geographic information system software package ManifoldCF, Apache Software Foundation open-source project for transferring content between repositories or search indexes