The name Dayna means Danish, From Denmark and is of American origin. Dayna is a name that's been used primarily by parents who are considering baby names for girls.
American spelling of DANA (to differentiate it from DANNA).
Baby Names Tip: Don't give your child a nickname (i.e. "Jimmy") as a given name on their birth certificate. Let them have the flexibility to choose. Remember, you're not just naming a baby, you're also naming an adult!