Cosmos is a very rare boys' name that peaked in 1970 and has grown less common since.
Cosmos is a boy name. In 2025 it ranked #9,080 for boy births in the United States (and #18,795 across all names), given to 8 babies. Cosmos first appears in 1970 and peaked in 1970 (9 births).
Boys named Cosmos per year · hover for count and boys rank · Source: U.S. Social Security Administration, national data 1970–2025 · U.S.+territories from SSA territory files (1998–2025)