Wilmer is a Germanic name meaning "famous will" or "resolute and famous", from wil, will, and mar, famous. It was fairly common in early 20th-century America and is now used mostly in Latino families, where the actor Wilmer Valderrama is a familiar bearer. Wilmer peaked at number 1069 in the United States in 2007 and ranks number 1742 among boys' names in 2025.