Olly is a very rare name used for both girls and boys that peaked in 2021 and has grown less common since.
Olly is predominantly a boy name. In 2025 it ranked #7,543 for boy births in the United States (and #15,821 across all names), given to 11 babies. Olly was first reported in SSA data in 1925 and peaked in 2021 (15 births).
Boys named Olly per year · hover for count and boys rank · Source: U.S. Social Security Administration, national data 1925–2025 · 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
Girls named Olly
Girls named Olly per year · hover for count and girls rank · Source: U.S. Social Security Administration, national data 1925–2025 · 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