Summary: Methods are described for determining the orientation of a plane section of a meteoritic iron from the Widmanstetter figures, the Neumann lines, or from oriented inclusions. The determination of the planes occupied by oriented phases in segregate structures in general is also considered, and it is shown how this may often be attained without knowledge of the orientation of the section plane relative to the matrix. These methods have been applied to the determination of the relative orientation of the crystals in iron meteorites containing a few large crystals and to the determination of the relative orientation of kamacite and taenite in meteoritic irons.