Kiyo is a very rare name used for both girls and boys that peaked in 1920 and has grown less common since.
Kiyo is predominantly a girl name. It last appears in U.S. records in 2025. Kiyo was first reported in SSA data in 1914 and peaked in 1920 (13 births).
Girls named Kiyo per year · hover for count and girls rank · Source: U.S. Social Security Administration, national data 1914–2025 · 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
Boys named Kiyo · 8 in 2025
Boys named Kiyo per year · hover for count and boys rank · Source: U.S. Social Security Administration, national data 1914–2025 · 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