  The fluid/gravity correspondence relates solutions of the incompressible
Navier-Stokes equation to metrics which solve the Einstein equations. In this
paper we extend this duality to a new magnetohydrodynamics/gravity
correspondence, which translates solutions of the equations of
magnetohydrodynamics (describing charged fluids) into geometries that satisfy
the Einstein-Maxwell equations. We present an explicit example of this new
correspondence in the context of flat Minkowski space. We show that a
perturbative deformation of the Rindler wedge satisfies the Einstein-Maxwell
equations provided that the parameters appearing in the expansion, which we
interpret as fluid fields, satisfy the magnetohydrodynamics equations. As a
byproduct of our analysis we show that in four dimensions, the dual geometry is
algebraically special Petrov type II.
