Meaning and name origin
Wynonna \wyn(on)-na\ as a girl's name is of Native American Indian origin, and the meaning of Wynonna is "first-born daughter". Wynonna is a variant of Winona (Native American Indian): from Sioux Indian.
Wynonna is not a popular first name for females and an equally uncommon surname or last name for all people (2000 U.S. Census).
Wynonna is also pronounced similarly to Anonna. Like Wynonna, this name is not commonly used.