Io
Girl · EYE-oh · Greek
Io is a girls' name of Greek origin. In 2025 it ranked 14,937th for girls in the US (5 babies).
What does Io mean?
Greek: Greek mythological name
Io is a priestess loved by Zeus in Greek myth and the name of one of Jupiter's largest moons.
- Say it
- EYE-oh
Is Io a girl's or a boy's name?
Io is a girls' name. In 2025, it was given to 5 girls and 5 boys in the US.
How popular is Io in the UK?
No girls in the UK were given it in 2025, or too few to be listed. Its busiest year was 2021, with 11 girls.
Half of all the girls named Io in the UK since 1996 were born between 2013 and 2021, the years shaded on the chart below.
Io in the UK, year by year
| Year | Girls | Rank |
|---|---|---|
| 2024 | 5 | #4,253 |
| 2023 | 4 | #4,915 |
| 2022 | 4 | #4,870 |
| 2021 | 11 | #2,478 |
| 2020 | 6 | #3,630 |
| 2019 | 6 | #3,738 |
| 2018 | 1 | #7,536 |
| 2017 | 4 | #4,967 |
| 2016 | 0 | – |
| 2015 | 0 | – |
| 2014 | 5 | #4,187 |
| 2013 | 6 | #3,719 |
| 2012 | 0 | – |
| 2011 | 4 | #4,980 |
| 2010 | 1 | #7,520 |
| 2009 | 1 | #7,377 |
| 2008 | 0 | – |
| 2007 | 3 | #5,415 |
| 2006 | 0 | – |
| 2005 | 0 | – |
| 2004 | 0 | – |
| 2003 | 3 | #4,560 |
How popular is Io in the US?
- Rank in 2025
- #14,937among girls
- Babies in 2025
- 5about 1 in 320,000 girls
- Five-year trend
- Too rare to calltoo few babies to tell
- Same name in a class
- under 1%chance among 15 girls
In 2025, 5 girls in the US were named Io, making it the 14,937th most popular name for girls. Five years earlier, in 2020, it was 8,948th. Its busiest year was 2022, with 18 girls. It first appears in the records in 2000. 5 boys were also named Io in 2025 (12,003rd for boys).
Half of all the girls named Io in the US since 1880 were born between 2011 and 2021, the years shaded on the chart below.
Io in the US, year by year
| Year | Girls | Rank |
|---|---|---|
| 2025 | 5 | #14,937 |
| 2024 | 0 | – |
| 2023 | 10 | #9,611 |
| 2022 | 18 | #6,459 |
| 2021 | 15 | #7,245 |
| 2020 | 11 | #8,948 |
| 2019 | 6 | #13,793 |
| 2018 | 11 | #9,146 |
| 2017 | 7 | #12,709 |
| 2016 | 16 | #7,227 |
| 2015 | 5 | #16,413 |
| 2014 | 12 | #8,961 |
| 2013 | 12 | #9,031 |
| 2012 | 12 | #9,105 |
| 2011 | 9 | #11,175 |
| 2010 | 6 | #14,953 |
| 2009 | 8 | #12,423 |
| 2008 | 5 | #17,498 |
| 2007 | 5 | #17,630 |
| 2006 | 5 | #17,163 |
| 2005 | 0 | – |
| 2004 | 7 | #12,754 |
| 2003 | 0 | – |
| 2002 | 0 | – |
| 2001 | 0 | – |
| 2000 | 5 | #15,024 |
Names like Io
Names given in the same years and the same naming tradition, with a similar sound.
Isla Pippa Lyra Maisie Esme Indie Dua Luna Harper Freya Poppy Mila
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