Strionautilus

{{Short description|Extinct genus of nautiloids}}

{{Automatic taxobox

| fossil_range = {{Fossil range | Cretaceous |postscript=? }}

| taxon = Strionautilus

| authority = Shimanskiy (1951)[https://paleobiodb.org/classic/checkTaxonInfo?taxon_no=13304 Paleobiology Database]

| subdivision_ranks = Species

| subdivision = * S. pondicherriensis (Blandford, 1866)

| synonyms = * Nautilus pondicherriensis (Blandford, 1866)

}}

Strionautilus is an extinct nautilid cephalopod. Fossils are found in Late Cretaceous marine strata of Russia and India.