Meaning and name origin
Dwain \d-wain\ as a boy's name is of Irish and Gaelic origin, and the meaning of Dwain is "dark, swarthy". Dwain is a variant of Duane (Irish, Gaelic); historical: many Irish and Scottish names have the meaning "dark" or "black". Also a variant of Dwayne (Irish, Gaelic): from the Gaelic "dubh", meaning "dark".
Dwain is a somewhat popular first name for males (#1032 out of 1220, Top 85%) but an uncommon surname or last name for all people (2000 U.S. Census).
Displayed below is the baby name popularity of the name Dwain for boys. Dwain reached its highest rank of #593 in the U.S. in 1950-1959. (2014 statistics).
Displayed below is a comparison of the popularity of the boy name Dwain and its variant forms. Popular variation forms ranked in the Top 1000/100 are Dwayne (#881), Duane, Dwane, Dwaine, Dewayne, Duwayne and Dwain. (2014 statistics).
Dwain is also pronounced similarly to Dain, Daine, Dan, Dann, Dean, Doan and Dowan. Other suggested similar baby names are Owain, Swain and Twain. These names tend to be less commonly used than Dwain.