Polytaenia nuttallii is a species of flowering plant in the carrot family known by the common name Nuttall's prairie parsley, or simply prairie parsley. It is native to the central and midwestern United States. This plant can be found in prairies, glades, and open woods. In some areas it is very common on roadsides. This species is used in habitat restoration projects in prairies and it may be planted as an ornamental.