Casimir

Did you know?

A few things about Casimir you might not know, from US birth records and Wikipedia. Handy for convincing a partner, or a grandparent.

⭐ Famous Casimir

Casimir Funk

Polish-American biochemist

Choose Casimir and your child shares a first name with Casimir Funk, a Polish-American biochemist. A ready-made answer when someone asks “Casimir, like who?” Casimir Funk's Wikipedia article is available in 62 languages, a good sign of just how widely known they are.

Read about Casimir Funk on Wikipedia ↗ (opens in a new tab)

Photo: Unknown photographer, Public domain (opens in a new tab), via Wikimedia Commons

• 👶How commonAbout 1 in every 23,419 baby boys born in the US in 2025 was named Casimir, 73 babies in all. In a typical school of 500 kids, your Casimir would very likely be the only one.
• 📜HistoryCasimir first shows up in US birth records in 1894, the first year at least 5 babies got it. It has been in use for 131 years since.
• 🏆Best yearIt was far more popular in 1917, when it ranked #393. Today it's #2,035, so it could be due a comeback.
• 📈Then vs nowCasimir is 5.3× more common today than it was in 2000. In 2000 it was given to about 1 in 123,457 baby boys; in 2025, about 1 in 23,419.
• 🚀TrendCasimir has climbed 1,618 places in the US rankings over the last five years and now sits at #2,035. Fast risers like this often keep climbing, so expect to hear it more.
• 📍Where it's lovedCasimir is most popular in Colorado, where it ranks #849. It's in the top 1,000 in 1 state.

About the name Casimir

Casimir is a boy name. It has 7 letters and 3 syllables, starting with C and ending in “-mir”. US birth records list Casimir for boys from 1894 to 2025, in 131 of those 132 years. Its best year was 1917, when it ranked #393 among boy names. In 2025 it ranked #2,035, with 73 babies.