Ellsey \e-ll-sey\ as a girl's name is a variant of Elizabeth (Hebrew), and the meaning of Ellsey is "God's promise; God is my oath".
The baby name Ellsey sounds like Ellsee and Ellse. Other similar baby names are Elleen, Ellsa, Ellie, Eiley, Elle, Elly, Ellen, Elyse, Elisee, Elise, Elsy, Elsee, Else, Ellyse, Ellsi, Ellke, Ellee, Kelsey, Kellsey, Nelsey and Nellsey.