What Rainier means
Rainier is a form of Rayner.
Meaning behind the documented name family
The name developed through Rainier → Rayner. The family’s meaning is “advice, counsel, decision + army”, recorded in the naming reference for Rayner.
Related names and everyday forms
Related names include Rayner.
American usage and historical context
In the United States, 874 boys were recorded with the name Rainier between 1956 and 2025. Its highest annual count was 41 in 2023; its best national rank was #2,606 in 1956.
Over 5 years its rank fell, from #3,327 in 2020 to #3,361 in 2025. Over 10 years its rank fell, from #3,287 in 2015 to #3,361 in 2025.
In the United States, 46 girls were recorded with the name Rainier between 2015 and 2023. Its highest annual count was 11 in 2019; its best national rank was #9,601 in 2019.
Sources & methodologyReferences, data & attribution
Meaning, origin, and language notes draw on the references below.
American popularity figures use published Social Security Administration records for this exact spelling. Counts below five for a name, sex, and year are omitted.