The first name Leslie is of Celtic, Gaelic, Scottish, Celtic/Gaelic origin. It is often a boy or girl name. It has the following meaning(s):
Celtic: From the Gray Fortress
Gaelic: From the Gray Fortress
Scottish: Guardian of Hollies or the Gray Fort; a Surname Taken from a Place Called Lesslyn in Aberdeenshire. The Name Might Be Derived from the Gaelic Elements Lios (Enclosure, Garden, Fort) and Chuillinn (A H
Scottish: Scottish Surname and Place Name. from Leslie
Celtic: From the Gray Fortress
Scottish: Dwells at the Gray Fortress
Celtic/Gaelic: Meadowlands