Janzenella is a genus of wasp, the only member of the family Janzenellidae within the superfamily Platygastroidea.

It contains only a single living species, Janzenella innupta, which has only been collected in Costa Rica.

Fossil members of the living species have also been described from Miocene aged Dominican amber.

[1][2] A Late Eocene fossil species, Janzenella theia is known from specimens entombed in Baltic amber.

[3]