Riva is a ♀ female name.
Riva is a variant of the name Rivka, which is a modern Hebrew form of the name Rebecca.
Riva means “captivating” (from Hebrew “ribhqeh/ריבקה” = connection or Semitic “rbq/רבק” = to tie firmly/to join/to snare). By the way, in Italian, riva means “shore” or “riverside”.