Carin is of Scandinavian origin, specifically from Sweden and Norway. It is a variant form of the name Karin, which itself is derived from the Old Norse word 'Kari'. In Swedish, Carin is often used as an informal or familiar version of Karin. The name gained popularity in English-speaking countries during the mid-20th century due to its use by notable figures like Swedish actress Carin Sundell and Princess Margaret's lady-in-waiting, Lady Carina Fitzwalter.
"Carin experienced a steady increase in popularity over the years, with birth numbers rising from 13 in 2020 to 23 in 2023. In total, there were 67 babies named Carin between these four years."