Cynosurus is a genus of Eurasian and North African plants in the grass family. Plants in this genus are known generally as dogstail grass. They are native to the Europe, the Azores, Algeria, Tunisia, Turkey, the Caucasus, and Iran, but some have been introduced into Australia as well as North and South America.

Three species are currently accepted.

Numerous names have been coined using the name Cynosurus, applied to species now regarded as better suited to other genera (Aegopogon, Apera, Beckmannia, Bouteloua, Centotheca, Chloris, Ciliochloa, Coelachyrum, Cynodon, Dactyloctenium, Desmostachya, Dinebra, Eleusine, Enteropogon, Falona, Festuca, Harpochloa, Lamarckia, Leptochloa, Ochthochloa, Oreochloa, Polypogon, Rostraria, Sclerochloa, Sesleria, Sesleriella, Tribolium, and Wangenheimia). Here are links to help you find the appropriate information.