Siphona singularis is a Neotropical species of tachinid flies in the genus Siphona of the family Tachinidae. It is the type species of the Actinocrocuta subgenus within Siphona.
Siphona singularis is distributed widely in the Neotropical realm. It is recorded in Costa Rica, Colombia, Ecuador, Peru, Brazil (Manaus and southeastern region) and Trinidad.