Göbekli Tepe is a prehistoric, man-made megalithic hill site in today’s south- east Turkey which is riddled with walled circular and rectangular enclosures lined by and surrounding T-shaped monolithic pillars proposed to represent supernatural humanoid beings. We examined if H-shaped carvings in relief on some of these pillars might have a symbolic meaning rather than merely depicting an object of practical use. On Pillar 18 in Enclosure D, for example, one such “H” is bracketed by two semi-circles. An almost identical symbol appears as a logogram in the now extinct hieroglyphic language of the Bronze Age Luwians of Anatolia and there it meant the word for “god”.