Emilía and Aron were the most popular first names given to babies born in Iceland in 2021. Majority of babies receive two or more given names. Þór was the most popular second name for boys and Rós for girls.

In the population as a whole, the rankings of the most popular given names have not changed significantly since 2018. Among males, Jón was the most frequent first name, and Jón Þór the most frequent double name. Among females, Anna was the most popular name while Anna María was the most popular of the double name combinations.

Birthdays in Iceland are not evenly spread over the year. Fewer people are born in the winter from October to March than other months. Most people are expected to celebrate their date of birth on 1 January (1,246) while, apart from 29 February with 234 persons born on that day, Christmas Day had the fewest birthday celebrators (780).