Rain \rain\ as a girl's name (also used as boy's name Rain), is a variant of Rainbow (English). See for meaning of Rain.

The baby name Rain sounds like Raina, Rainy and Raine. Other similar baby names are Cain, Nan, Arin, Rina, Carin, Karin, Daina, Dawn, Laine, Erin, Fan, Farin, Fawn, Faun, Faina, Win, Jan, Jann, Jaine, Jaina, Laina, Lin, Marin, Min, Naia, Nann, Paine, Quin, Ray, Rae, Rayna, Raye, Rafa, Reina, Rayne, Raya, Rainey, Rainee, Rainah, Raene, Raisa, Raiza, Raja, Rama, Ramie, Rana, Rani, Ranit, Rania, Raven, Ravyn, Ravina, Razia, Razi, Reid, Ragan, Reine, Rei, Ria, Rhia, Rie, Ryann, Ranna, Robin, Rasine, Rasia, Rui, Ryan, Rynn, Ryen, Riayn, Riann, Rian, San, Taina, Tarin, Van, Zaina and Yann.