Oryza coarctata, synonym Porteresia coarctata, is a species of grass in the family Poaceae, native to Pakistan, India, Bangladesh, and Myanmar.

[1] It is a perennial species that shows substantial underground rhizomatous growth.

The rhizome tissues give out aerial shoots in a favourable season.

[2] Oryza coarctata is a form of wild rice that grows in saline estuaries and is harvested and eaten as a delicacy.

[6] The leaves of this species secrete salt through special microhair like structures that have three morphotypes, and a method to isolate these structures has been developed.