Karolyn is an English name for girls. The meaning is `strong, brave, free` The name Karolyn is -as far as we know- only given to American girls. Use for the other sex: Carolus What do they use in other countries? Karel Karol (Polish) Carlin Charlee (English) Carel Carroll (Irish) Kari (Finnish) Charlotte (German, French, English) Carol (English) Ch... Found on https://www.pregnology.com/names/girls/Karolyn