The name Cai is of Welsh origin and means "companion" or "leader". It is a short form of the name Caine, which was brought to Wales by the Normans during the medieval period. The name has been used in Wales for centuries and has become quite popular in recent years. Despite its Welsh roots, Cai is also used as a given name in other parts of the United Kingdom and beyond. It is considered a unisex name but is more commonly used for boys.
The name Cai experienced a significant increase in popularity over the given time period, with a notable spike starting from around the year 2000. The first recorded birth was in 1989 with just 5 occurrences. However, by 2022, there were 108 births, marking an impressive growth of over 20 times the initial number. This upward trend suggests that the name Cai has gained considerable traction among parents choosing names for their children during this period.