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The experimental documentation of a three-dimensional shock-wave/boundary-layer interaction in a nominal Maeh 3 flow is presented. The model consisted of a sting-supported cylinder, aligned with the free-stream flow, and a 20°half-angle conical flare offset 1.27 era from the cylinder centerline. Surface oil flow, laser light sheet illumination, and schlieren were used to document the flow topology. The data includes surface-pressure and skin-fi'iction measurements. A laser interferometric skin friction instrument was employed to acquire the skin-friction data. Included in the skin-friction data are measurements within separated regions and threedimensional measurements in highly-swept regions. The skin-friction data will be particularly valuable in turbulence modeling and computational fluid dynamics validation. Cf C1,2,3 h ki Moo