Microdon is a fly genus.
Microdon (plant) is a genus of flowering plants in family Scrophulariaceae
Microdon may also refer to the scientific names of several different species of fish:
Cyclothone microdon Haplochromis microdon Lethrinus microdon Lethrinops microdon Pachystomias microdon Panna microdon, a species of Panna fish Pristis microdon Pseudotriakis microdon Salangichthys microdon