Cayse

Cayse is a contemporary unisex name though used more frequently for girls, appearing as a modern spelling variant of Casey. The traditional Casey derives from an Irish surname meaning 'vigilant' or 'watchful,' originally from the Gaelic 'cathasaigh.' The distinctive spelling with 'y' and 's' gives this familiar name a fresh, updated look while maintaining its recognizable pronunciation. Cayse began appearing in name records primarily in the late 20th century, as alternative spellings gained popularity. While never reaching high ranking positions on popularity charts, its modern appeal lies in combining the friendly, approachable sound of Casey with a more unique visual presentation. The name carries a casual, contemporary vibe that appeals to parents seeking something familiar yet slightly distinctive for their daughter.

Cayse is also given to boys.

Pronounced KAYSS.

As of October 2026, Cayse ranked #10049 in US births in 2024 SSA, peaked at #5898 in 1998.