Boy Names That Start With J

Ranked in the United States in 2025, with birth trends and peak years.

J is the most common first initial for baby boys in the United States, with 34 J names in the top 300 for 2025, led by James (#6). Of those, Jaziel is the fastest-growing, now 3.8 times as common as in 2020. Julian (#25) reached its highest rank on record in 2025.