Heterischnus is a genus of parasitoid wasps belonging to the family Ichneumonidae.

The species of this genus are found in Europe, North America, and Africa.

Species:

• Heterischnus africanus (Heinrich, 1936)
• Heterischnus anomalus (Wesmael, 1857)
• Heterischnus bicolorator (Aubert, 1965)
• Heterischnus coloradensis (Cushman, 1920)
• Heterischnus debilis (Gravenhorst, 1829)
• Heterischnus filiformis (Gravenhorst, 1829) - Xestia collina is its known host.
• Heterischnus huardi (Provancher, 1875)
• Heterischnus mexicanus Claridge, 2021
• Heterischnus mfongosi Rousse & van Noort, 2013
• Heterischnus mkomazi Rousse & van Noort, 2013
• Heterischnus olsoufieffi (Heinrich, 1938)

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