Mack is a distinctive boys' name in United States, ranking #545 in 2023 with 539 recorded births. The name reached its all-time peak in 2025 with 668 births ranking #463. Since 1996, the popularity has increased by 541.7%. In 2023, approximately 1 in every 3,170 boys born was named Mack. RISING Recent data shows the name is currently rising.
Mack comes from a Gaelic surname element meaning son. As a first name it feels brisk, sturdy, and straightforward.
Originally a surname element in Scottish and Irish naming, Mack later moved into given-name use, especially in English-speaking countries. Its clipped style gives it a modern but grounded feel.