Kazuya is a very rare boys' name that peaked in 1987 and has grown less common since.
Kazuya is a boy name. In 2025 it ranked #12,989 for boy births in the United States (and #26,712 across all names), given to 5 babies. Kazuya was first reported in SSA data in 1986 and peaked in 1987 (8 births).
Boys named Kazuya per year · hover for count and boys rank · Source: U.S. Social Security Administration, national data 1986–2025 · U.S.+territories from SSA territory files (1998–2025) · SSA publishes a name only in years it was given to at least 5 babies, so a name may have been in use before — or between — the years shown here