Poecilognathus is a genus of bee flies in the family Bombyliidae, found in North, Central, and South America. There are at least 20 described species in Poecilognathus.

Species: These 22 species belong to the genus Poecilognathus:

• Poecilognathus badia (Coquillett, 1904)
• Poecilognathus bicolor (Coquillett, 1904)
• Poecilognathus damfino Evenhuis, 2024
• Poecilognathus fulvidus (Coquillett, 1904)
• Poecilognathus inornatus (Coquillett, 1904)
• Poecilognathus loewi (Painter, 1965)
• Poecilognathus marginatus (Coquillett, 1904)
• Poecilognathus philippianus (Rondani, 1863)
• Poecilognathus pulchellus (Williston, 1901)
• Poecilognathus punctipennis (Walker, 1849)
• Poecilognathus radius (Coquillett, 1904)
• Poecilognathus relativitae (Evenhuis, 1985)
• Poecilognathus scolopax (Osten Sacken, 1877)
• Poecilognathus stictopennis (Hall, 1976)
• Poecilognathus sulphureus (Loew, 1863)
• Poecilognathus testacea (Macquart, 1840)
• Poecilognathus testaceus (Macquart, 1840)
• Poecilognathus thlipsomyzoides Jaennicke, 1867
• Poecilognathus unicolor (Bezzi, 1925)
• Poecilognathus unimaculatus (Coquillett, 1904)
• Poecilognathus xanthogaster (Hall, 1976)
• † Poecilognathus stigmalis (Cockerell, 1915)