Siagona jenissonii is a species of beetles in the family Carabidae.
Siagona jenissonii can reach a length of . Body is flat with a constriction between the prothorax and mesothorax. Pronotum is densely punctured. Mandibles are short and strong. Males have quite longer trochanters than females. This species is brachypterous.
These carabids have a stenotopic lifestyle. They live in ground fissures and in darkness for most of their life. They are nocturnal hunters of ants.
This species is present in southern Spain, in Portugal and on the coast of Morocco.