Harpactor is a genus of assassin bug family (Reduviidae), in the subfamily Harpactorinae.

Some species have been investigated for their potential as biological pest control agents in integrated pest management.

Species: The Global Biodiversity Information Facility lists:

• Harpactor angulosus (Lepeletier & Serville, 1825)
• Harpactor bisagittatus Pennington
• † Harpactor bruckmanni Heer, 1853
• † Harpactor chomeraciensis Riou, 1999
• † Harpactor constrictus Heer, 1853
• Harpactor distinguendus (Stål, 1859)
• † Harpactor gracilis Heer, 1853
• Harpactor incertus (Distant, 1903)
• † Harpactor longipes Heer, 1853
• † Harpactor maculipes Heer, 1853
• † Harpactor obsoletus Heer, 1853
• Harpactor ornatus Uhler
• Harpactor rhombeus (Erichson, 1848)
• Harpactor shevroyensis Hegde, 1989
• Harpactor tuberculosus Stål, 1872