Courtnay \co(u)-rt-nay, cour-tnay\ as a girl's name is a variant of Courtney (Old French), and the meaning of Courtnay is "domain of Curtius".
The baby name Courtnay sounds like Courtny and Courtenay. Other similar baby names are Kourtney, Kourtenay, Courtnie, Courtnee, Courteney, Cortny, Cortney and Cortenay.