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Io
GirlMeaning of Io: Greek: 'mythological moon goddess'
Io is a girl's name most strongly associated with Greek naming. It has 2 letters and 1 syllable, and it is a genuinely rare and unique choice — 9089th most popular girls' name in the United States in 2025 and 4192nd in England & Wales.
US rank 2025
#9089
10 babies in 2025
England & Wales 2024
#4192
5 babies in 2024
US babies since 1880
226
First recorded 2000 · peak 2022
Trend
stable
Style: rare
Popularity over time
Gender split
16% boys · 84% girls, based on US, UK and international usage.
Origins & cultures
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Other names starting with I
Hebrew · 4 syllables
US #7UK #11
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English · 2 syllables
US #40UK #5
Scottish · 2 syllables
US #30UK #4
French · 4 syllables
US #170UK #52
Spanish · 3 syllables
US #181UK #169
Greek · 2 syllables
US #636UK #952
German · 2 syllables
US #1088UK #337
Hebrew · 4 syllables
US #555UK #666
Arabic & Persian · 2 syllables
US #757UK #156
Irish · 3 syllables
US #1086UK #64
English · 2 syllables
US #603UK #148