Mirl is an uncommon, unique first name of German origin. It is a diminutive form of Mirko, which itself is derived from the Slavic name Mircea meaning "peaceful" or "world". Mirl is often associated with strength and individuality due to its rarity and unique sound. In recent years, it has gained some popularity in Germany and other German-speaking countries as parents seek distinctive names for their children.
The name Mirl appears to have been moderately popular during the early-to-mid 20th century, with a total of 87 recorded births between 1913 and 1942. The peak years for its usage were 1913 and 1921, each with eight births. However, it seems to have been most consistently popular in the early 1930s, with five births registered each year from 1932 to 1935 inclusive.