Reyna is a spelling variant (English) of the Slavic, Czech, English, German, Polish, and Russian name Raina.
Reyna is also a derivative (English) of the English, German, and Polish name Regina.
Reyna is also a derivative (English and Spanish) of the German, Spanish, Italian, English, Japanese, and Yiddish name Reina.
Reyna is rather popular as a baby girl name. The name has been growing in popularity since the 1970s; prior to that, it was of sporadic use only. Its usage peaked modestly in 2018 with 0.027% of baby girls being named Reyna. It was #611 in rank then. Among all girl names in its family, Reyna was the 2nd most popular after Regina in 2018. It was 52% more frequently used than Reyna in that year.
† Pronunciation for Reyna: R as in "race (R.EY.S)" ; EY as in "ate (EY.T)" ; N as in "knee (N.IY)" ; UW as in "two (T.UW)"