The Caribbean sharpnose shark (Rhizoprionodon porosus) is a requiem shark, and part of the family Carcharhinidae.

It is found in the tropical waters of the western Atlantic Ocean and the Caribbean, between latitudes 28° N and 40° S, from the surface to a depth of 500 m. The maximum reported size for the Caribbean sharpnose shark is 110 cm (43 in).

The average adult size appears to be about 80–89 cm (31.5–35 in).

Both sexes seem to reach maturity at about 65–70 cm (25.5–27.5 in) in length, and just over 2 years old.

Reproduction and litter size is similar to those of the Atlantic sharpnose shark.