Aco (given name)
Aco is a masculine given name primarily found in Southeastern Europe, particularly in Serbia, Croatia, and North Macedonia. It is often a diminutive form of the name Aleksandar (Alexander), or less commonly, other names beginning with "A", such as Adam.
While typically considered a masculine name, occurrences of it as a feminine name are rare but possible, particularly as a nickname.
The name's popularity varies by region and time period, but it maintains a consistent presence in the aforementioned areas.