Delta pyriforme is a species of potter wasp in the subfamily Eumeninae of the family Vespidae. They are distributed across Asia. Several populations are recognized:
D. p. circinale (Fabricius, 1804) D. p. nigrocinctum Giordani Soika, 1993 D. p. philippinense (Bequaert, 1928) D. p. pyriforme (Fabricius, 1775)
Delta pyriforme males have a yellow labrum and clypeus contrasting with the brown body colour. They also have a yellow pronotum and differ from Delta esuriens in lacking a yellow band on the petiole. Delta conoideum lacks yellow on the thorax.
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