[ 1 syll. (r)hys, rh-ys ] The baby boy name Rhys is sometimes used as a girl name. Its pronunciation is RIYS (English), RIYZ , or HHRIYS (Welsh) †. Rhys is used chiefly in the English and Welsh languages, and its origin is Welsh. It is derived literally from the word 'rhys' meaning ardor, enthusiasm, rashness. The name was borne by several south-west Welsh rulers in medieval times, including Rhys ap Tewdwr (-1093) who died at the battle of Brecon, and his grandson Rhys ap Gruffudd (1132-1197). The name has mainly been used by the Welsh.
Rhys is a fairly popular baby name for boys. The name's popularity has been increasing since the 2000s; before that, it was of infrequent use only. At the modest height of its usage in 2018, 0.032% of baby boys were given the name Rhys. It ranked at #464 then. Within all boy names in its group, Rhys was the 2nd most popular after Rhett in 2018. It was used 4 times more than Rhys in that year. In the past century Rhys has mostly been a baby boy name.
† Pronunciation for Rhys: R as in "race (R.EY.S)" ; IY as in "eat (IY.T)" ; S as in "see (S.IY)" ; Z as in "zoo (Z.UW)" ; HH as in "he (HH.IY)"