Collen is an uncommon, unisex given name of Irish origin. It is derived from the Gaelic name 'Cúilén', which means 'holly'. The name has been used historically in Ireland but is relatively rare today. Collen is often spelled without the second 'l' in English-speaking countries, though the original spelling with two 'ls' is considered more authentic.
The name Collen experienced significant fluctuations in popularity over the years, with a marked increase starting from 1992 onwards. The total number of births registered as Collen over this period is 661.