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Strunius is an extinct genus of coelacanthimorph lobe-finned fish from the Devonian period. It was about 10 cm (4 in) long.
Although it was a lobe-finned fish Strunius's fins were supported by fin rays, which are more associated with ray-finned fish. Still, its skull, composed of two articulating halves, was characteristic for sarcopterygians, namely the Rhipidistia. Also, the skull was divided by a deep articulation, with both halves probably connected by a large muscle. The same system is seen in coelacanths and the better-known Eusthenopteron.
