Barb is an English contracted form of Barbara.
Barb is also a contracted form of the English and Latin Barbie.
Barb is rare as a baby girl name. At the modest peak of its usage in 1960, 0.024% of baby girls were named Barb. It was #441 in rank then. The baby name has markedly slipped in popularity since then, and is used only on an infrequent scale now. Out of the family of girl names directly related to Barb, Barbara was the most popular in 2018.
† Pronunciation for Barb: B as in "be (B.IY)" ; AA as in "odd (AA.D)" ; R as in "race (R.EY.S)"