"Variant of Johanna"
The name Yohanna is commonly a female name from the "German" origin.
Yohanna is a spelling of Johanna, the feminine form of Johannes, which goes back through Greek Ioanna to the Hebrew Yohanan, from a root commonly glossed as "God is gracious." The initial Y reflects the Hebrew yod; the same spelling also occurs in Arabic as a transliteration of the name John, used by Arabic-speaking Christians.
Johanna means "God is gracious".
The pronunciation of Yohanna is yo-HAN-uh.