Harli is of American origin, derived from the German name Harald. It means "powerful and strong". The name has been used sparsely throughout history but gained popularity in the United States in recent years.
The name Harli experienced its peak popularity between 1993 and 1997, with a steady increase from 38 to 55 births per year. However, since the late 1990s, its usage has declined significantly, with fewer than 50 births per year recorded in every subsequent year until 2023, where it reached its lowest point with only 21 births registered. Overall, there were a total of 1255 babies named Harli between 1989 and 2023.