A variant of Chelsea, from an English place-name meaning landing place or harbor area.
Chelssie is another variant of Chelsea, drawing from the same English place-name root meaning landing place or harbor area. The doubled consonant and the -ssie ending give it a more decorative, contemporary feel, while the underlying structure still connects it to the broader Chelsea family.
This spelling feels especially modern, the sort of adjustment that makes a familiar name look more individualized on paper while leaving the sound mostly intact. Chelssie has a soft but distinctive appearance, and that visual distinctiveness is part of its identity. Like many modern variants, it sits between tradition and invention: recognizably familiar, but noticeably personalized.