Rainier is a unique and distinctive given name of French origin, derived from the Germanic elements 'Raginhard' which mean 'powerful' and 'strong'. It is often associated with Mount Rainier, the highest peak in Washington State, USA, named after a British naval officer, Peter Rainier. The name has been used sparingly throughout history but has gained some popularity in recent years, particularly among families seeking uncommon yet meaningful names for their children.
"The name Rainier experienced a notable increase in popularity between 2018 and 2019, with the number of births almost doubling from 6 to 11. However, it appears to have fluctuated somewhat since then, with births ranging from 5 to 10 per year."