Whittnie \wh(i)-tt-nie\ as a girl's name is a variant of Whitney (Old English), and the meaning of Whittnie is "white island".

The baby name Whittnie sounds like Whitnie, Whittney, Whitni and Whitnee. Other similar baby names are Winnie, Whittley, Whittany, Whittaney, Whitny, Whitnea and Whiteney.