Kash is a modern American spelling of Cash, an English surname that originally meant "box maker", from the Old French casse, and is today heard as the word for "money". Singer Johnny Cash gave the name its cool, outlaw image, and the K spelling matches names like Kason and Knox. Kash has been in the US top 1000 since 2008, rose from number 382 in 2015 to a peak of 240 in 2021 and ranks 286th in 2025.