Ronia is a female name.
Roni is an English variant of the Russian name Ronja, which is a short form of the names Roxana or Veronika. Besides, Ronja or Ronia is an invented name by the Swedish author Astrid Lindgren for her book “Ronia the Robber’s Daughter” (“Ronja rövardotter”). She had derived the name from the north Swedish lake JuRONJAure. Ronia is also a feminine form of the Old Norse name Ragnvaldr and a diminutive of the Greek name Siphronia. Besides, Ronia is of Hebrew origin.
Ronia means “bright” and “dawn” (from Roxana) and “true image” or “winner” (from Veronika). Besides, Ronia means “the advice of the ruler” (from Old Norse “regin” = advice/counsel (of the gods) + “valdr” = ruler/power) and “self-controlled”, “sensible” (from Sophronia). In Hebrew, Roni means “my song” and “my joy”.