A simple sub-millimeter infrared reflectarray (SMIR) has been successfully fabricated and tested at 10.6 mum. The SMIR is comprised of three independent arrays or "stripes" of a single size element on a coated optical flat. Actual reflectarray elements consist of variable size patches which exhibit higher operating bandwidths than reflectarrays utilizing other types of elements and are easier to fabricate at small dimensions. Measured results demonstrate the feasibility of an infrared reflectarray. Continued research will focus on developing SMIR technology for use as a planar focusing element