Ruby \r(u)-by\ as a girl's name (also used as boy's name Ruby), is pronounced ROO-bee. It is of English origin, and the meaning of Ruby is "the red gemstone". Jewel name first used in the 1870s. Dancer Ruby Keeler.

Ruby has 11 variant forms: Rubee, Rubena, Rubetta, Rubey, Rubi, Rubia, Rubianne, Rubie, Rubina, Rubinia and Rubyna.

For more information, see also related names Emerald and Jewel.

Baby names that sound like Ruby are Reba, Rupa, Robi, Robby and Roba.