Gahan is of Irish origin, derived from the ancient Gaelic name 'Maghan'. It means 'little stone' or 'small stone', a fitting name for a person who might be thought of as strong yet modest. The name gained popularity in the 20th century and is often used today.
"The name Gahan experienced a slight uptick in popularity between 2019 and 2021, with 7 births recorded in 2019 compared to the 5 births each in 2012, 2016, and 2021. Over this period, there were a total of 22 babies named Gahan."