Isen is of Scandinavian origin, derived from the Old Norse word 'Ísann', which means 'ice'. It is often found among Nordic cultures and has been adopted by some families in other parts of the world as well. The name Isen is typically given to boys and is pronounced /ˈaɪzən/. Spelling variations include Isen, Isin, and Yseen.
The name Isen experienced a slight increase in popularity between 2008 and 2017, with a notable drop in births recorded in 2011 (5 births) compared to the years surrounding it (7 births in 2008 and 6 births in both 2013 and 2014). After 2014, the number of births with the name Isen stabilized at around 6 per year until 2020, when it once again increased to 6 births. Over this 13-year period, there were a total of 41 babies named Isen.