Isidor
Meaninggift of Isis · Greek
- US rank
- #9,714
- Syllables
- 3
- Peak
- #765 in 1885
7 babies were named Isidor in the US in 2025.
Save adds it to your list. Vote moves it up the top voted names.
US births per million boys, 1883–2025
Similar names
Popularity: U.S. Social Security Administration (babies with 5+ births per year).
Did you know?
A few things about Isidor you might not know, from US birth records and Wikipedia. Handy for convincing a partner, or a grandparent.
Famous Isidor
Isidor Isaac Rabi
American physicist (1898–1988)
Choose Isidor and your child shares a first name with Isidor Isaac Rabi, an American physicist. A ready-made answer when someone asks “Isidor, like who?” Isidor Isaac Rabi's Wikipedia article is available in 86 languages, a good sign of just how widely known they are.
Read about Isidor Isaac Rabi on Wikipedia (opens in a new tab)Photo: Nobel Foundation, Public domain (opens in a new tab), via Wikimedia Commons
- How commonAbout 1 in every 243,902 baby boys born in the US in 2025 was named Isidor, 7 babies in all. In a typical school of 500 kids, your Isidor would very likely be the only one.
- HistoryIsidor first shows up in US birth records in 1883, the first year at least 5 babies got it. It has been in use for 142 years since.
- Best yearIt was far more popular in 1885, when it ranked #765. Today it's #9,714, so it could be due a comeback.
- MeaningIn Greek, Isidor means “gift of Isis”.
About the name Isidor
Isidor is a boy name of Greek origin meaning “gift of Isis”. It has 6 letters and 3 syllables, starting with I and ending in “-dor”. US birth records list Isidor for boys from 1883 to 2025, in 46 of those 143 years. Its best year was 1885, when it ranked #765 among boy names. In 2025 it ranked #9,714, with 7 babies.
Origin:Greek names
| Decade | Babies per million | About 1 in |
|---|---|---|
| 1880s | 23 | 42,787 boys |
| 1890s | 31 | 31,776 boys |
| 1900s | 15 | 68,353 boys |
| 1910s | 26 | 38,670 boys |
| 1920s | 6.1 | 163,132 boys |
| 1930s | 3.4 | 294,985 boys |
| 1940s | 0.3 | 3,030,303 boys |
| 1950s | 1.7 | 602,410 boys |
| 1960s | 0.3 | 3,571,429 boys |
| 2010s | 0.3 | 3,571,429 boys |
| 2020s | 2.9 | 342,857 boys |
More Greek boy names
- Boy name: Theodore · gift of God
- Boy name: Mateo · gift of God
- Boy name: Lucas · man from Lucania
- Unisex name: Elias · my God is Yahweh
- Boy name: Sebastian · venerable
- Boy name: Leo · lion
- Boy name: Thomas · twin
- Unisex name: Miles · possibly gracious
Questions about the name Isidor
What does the name Isidor mean?
Isidor means “gift of Isis” in Greek.
What is the origin of the name Isidor?
Isidor has Greek roots in our records. Other Greek names include Theodore, Mateo, Lucas.
Is Isidor a boy or girl name?
Isidor is a boy name.
How popular is the name Isidor?
Isidor ranked #9,714 for US boys in 2025, given to 7 babies. Its best year was 1885 (#765).