Cass

Did you know?

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

⭐ Famous Cass

Cass Sunstein

American legal scholar, writer, blogger (b. 1954)

Choose Cass and your child shares a first name with Cass Sunstein, an American legal scholar, writer, blogger. A ready-made answer when someone asks “Cass, like who?” Cass Sunstein's Wikipedia article is available in 26 languages, a good sign of just how widely known they are.

Read about Cass Sunstein on Wikipedia ↗ (opens in a new tab)

Photo: Matthew W. Hutchins, Harvard Law Record, CC BY 3.0 (opens in a new tab), via Wikimedia Commons

• 👶How commonAbout 1 in every 90,090 baby boys born in the US in 2025 was named Cass, 19 babies in all. In a typical school of 500 kids, your Cass would very likely be the only one.
• 📜HistoryCass first shows up in US birth records in 1881, the first year at least 5 babies got it. It has been in use for 144 years since.
• 🏆Best yearIt was far more popular in 1881, when it ranked #706. Today it's #5,045, so it could be due a comeback.
• 🍂TrendCass has slipped 904 places over the last five years and now sits at #5,045. Good news if you want a familiar name that fewer kids will share.

About the name Cass

Cass is a boy name of German and Irish origin. It has 4 letters and 1 syllable, starting with C and ending in “-ass”. US birth records list Cass for boys from 1881 to 2025, in 116 of those 145 years. Its best year was 1881, when it ranked #706 among boy names. In 2025 it ranked #5,045, with 19 babies.

Origin:German namesIrish names