Meaning From Old English origin meaning 'ship, victory' it is an alternative spelling of Kelsey. Origin of Kellsie English +-100%Zoom level changed to 1 Popular Middle Names Rayne Pronunciation 🔊 Listen Kellsie KELL-see Similar Names Kelsea Celsey Kelzie Kelsie Nikki Kelsey Kelsi Scarlet Evte Kelci Year by Year Popularity of Kellsie