Brother names for Theo
THEE-oh · 2 syllables
Common in France, England and Wales, Ontario, and 12 more places.
Ranked by fit
40 brother names for Theo, ranked by fit. Add your surname to re-rank.
1 in 197, England and Wales
Say it LOO-kus
Rose and fell with Theo · Same generation as Theo
Loved in the Netherlands, Ontario, British Columbia, and 2 more places. Common across France, the UK, three Nordic countries, and 11 more places. Rare in Italy, Poland, Israel, and 6 more places.
1 in 197 boys born in England and Wales in 2025. Number 32 there.
1 in 62, Poland
Say it GAY-bree-ul
Rose and fell with Theo · Same generation as Theo
Loved in France and Switzerland. Common in England and Wales, Italy, Poland, and 17 more places. Rare in Israel, the Netherlands, Ireland, and 4 more places.
1 in 62 boys born in Poland in 2025. Number 19 there.
1 in 25, Poland
Say it LEE-on
Rose and fell with Theo · Greek, like Theo
Loved in France, Poland, Austria, and 8 more places. Common across three Nordic countries, Quebec, Ireland, and 9 more places. Rare in England and Wales, Italy, Israel, and 4 more places.
1 in 25 boys born in Poland in 2025. Number 3 there.
1 in 85, England and Wales
Say it AR-thur
Rose and fell with Theo · Same generation as Theo
Loved in France, England and Wales, Quebec, and Northern Ireland. Common in the Netherlands, Ontario, Austria, and 16 more places. Rare in Italy, Poland, Israel, and 4 more places.
1 in 85 boys born in England and Wales in 2025. Number 5 there.
1 in 64, Catalonia
Say it HYOO-go
Rose and fell with Theo · Same generation as Theo
Loved in Sweden, Catalonia, Spain, and 1 more place. Common in France, England and Wales, the Netherlands, and 10 more places. Rare across Italy, Poland, three Canadian provinces, and 11 more places.
1 in 64 boys born in Catalonia in 2025. Number 7 there.
1 in 67, Northern Ireland
Say it CHAR-lee
Rose and fell with Theo
Loved across Northern Ireland, three Australian states, and New Zealand. Common across France, England and Wales, three Canadian provinces, and 8 more places. Rare in Italy, Poland, Israel, and 8 more places.
1 in 67 boys born in Northern Ireland in 2025. Number 4 there.
1 in 97, England and Wales
Say it OS-ker
Rose and fell with Theo
Loved in England and Wales and Denmark. Common in France, the Netherlands, Sweden, and 14 more places. Rare in Italy, Poland, Israel, and 8 more places.
1 in 97 boys born in England and Wales in 2025. Number 8 there.
1 in 255, Scotland
Say it NAY-thun
Rose and fell with Theo · Same generation as Theo
Common in France, England and Wales, Italy, and 8 more places. Rare in Poland, Israel, Sweden, and 11 more places.
1 in 255 boys born in Scotland in 2025. Number 56 there.
1 in 177, Scotland
Say it LOH-gun
Rose and fell with Theo · Same generation as Theo
Common across the UK, three Canadian provinces, Victoria, and South Australia. Rare in France, Italy, Poland, and 15 more places.
1 in 177 boys born in Scotland in 2025. Number 35 there.
1 in 64, Austria
Say it ee-LY-us
Rose and fell with Theo · Same generation as Theo
Loved across Austria, Switzerland, four German cities, and 2 more places. Common across England and Wales, three Canadian provinces, the Netherlands, and 11 more places. Rare in France, Italy, Poland, and 5 more places.
1 in 64 boys born in Austria in 2025. Number 4 there.
1 in 76, Ireland
Say it LEE-um
Rose and fell with Theo
Loved across three Canadian provinces, the Netherlands, Sweden, and 7 more places. Common across France, the UK, Italy, and 17 more places.
1 in 76 boys born in Ireland in 2025. Number 7 there.
1 in 192, England and Wales
Say it ROH-mun
Rose and fell with Theo · Same generation as Theo
Loved in Moscow. Common in England and Wales, Ontario, Scotland, and 5 more places. Rare in France, Italy, Poland, and 17 more places.
1 in 192 boys born in England and Wales in 2025. Number 27 there.
1 in 233, Catalonia
Say it AK-sul
Rose and fell with Theo · Same generation as Theo
Common in France, Sweden, Quebec, and 2 more places. Rare across the UK, Italy, Poland, and 15 more places.
1 in 233 boys born in Catalonia in 2025. Number 48 there.
1 in 202, Northern Ireland
Say it LEE-vy
Rose and fell with Theo
Loved across the Netherlands, three German cities, three Australian states, and 1 more place. Common across three Canadian provinces, Israel, Sweden, and 10 more places. Rare in France, England and Wales, Italy, and 4 more places.
1 in 202 boys born in Northern Ireland in 2025. Number 52 there.
1 in 159, England and Wales
Say it moh-HAM-ed
Rose and fell with Theo · Same generation as Theo
Common in England and Wales, the Netherlands, and 2 more places. Rare in France, Italy, Poland, and 17 more places.
1 in 159 boys born in England and Wales in 2025. Number 20 there.
1 in 224, Ireland
Say it SAM
Rose and fell with Theo · Same generation as Theo
Loved in the Netherlands. Common in Sweden, Ireland, and 1 more place. Rare across France, the UK, Italy, and 15 more places.
1 in 224 boys born in Ireland in 2025. Number 50 there.
1 in 67, England and Wales
Say it NO-uh
Rose and fell with Theo
Loved across France, the UK, Canada, and 19 more places. Common in Italy, Catalonia, and Spain. Rare in Poland, Israel, and Slovenia.
1 in 67 boys born in England and Wales in 2025. Number 2 there.
1 in 317, Scotland
Say it EL-ee-ut
Rose and fell with Theo · Same generation as Theo
Common across England and Wales, three Nordic countries, Ontario, and 5 more places. Rare in France, Italy, Poland, and 15 more places.
1 in 317 boys born in Scotland in 2025. Number 85 there.
1 in 542, England and Wales
Say it AH-lee
Rose and fell with Theo · Same generation as Theo
Common in France, Israel, Ontario, and 12 more places. Rare across the UK, Italy, Poland, and 9 more places.
1 in 542 boys born in England and Wales in 2025. Number 103 there.
1 in 204, England and Wales
Say it EYE-zik
Rose and fell with Theo
Common across France, the UK, three Canadian provinces, and 8 more places. Rare in Italy, Poland, Israel, and 12 more places.
1 in 204 boys born in England and Wales in 2025. Number 36 there.
1 in 69, Austria
Say it FEE-liks
Rose and fell with Theo
Loved across Austria and three German cities. Common across England and Wales, three Canadian provinces, the Netherlands, and 12 more places. Rare in France, Italy, Poland, and 7 more places.
1 in 69 boys born in Austria in 2025. Number 6 there.
1 in 190, Catalonia
Say it ray-YAHN
Rose and fell with Theo · Same generation as Theo
Common in France, Italy, the Netherlands, and 9 more places. Rare across the UK, Poland, Israel, and 8 more places.
1 in 190 boys born in Catalonia in 2025. Number 35 there.
1 in 1,042, England and Wales
Say it AY-bul
Rose and fell with Theo · Same generation as Theo
Common in France, the Netherlands, and Hungary. Rare across the UK, Italy, Poland, and 17 more places.
1 in 1,042 boys born in England and Wales in 2025. Number 195 there.
1 in 231, Switzerland
Say it MAH-lik
Rose and fell with Theo · Same generation as Theo
Common across Austria, Switzerland, five German cities, and 2 more places. Rare across France, the UK, Italy, and 10 more places.
1 in 231 boys born in Switzerland in 2025. Number 29 there.
1 in 706, England and Wales
Say it HAM-zuh
Rose and fell with Theo · Same generation as Theo
Common across Austria, five German cities, and 1 more place. Rare across France, the UK, Italy, and 13 more places.
1 in 706 boys born in England and Wales in 2025. Number 129 there.
1 in 79, Italy
Say it mah-TAY-oh
Rose and fell with Theo · Same generation as Theo · Same ending as Theo
Loved in Switzerland. Common in Italy, the Netherlands, Ontario, and 11 more places. Rare across France, the UK, Poland, and 6 more places.
1 in 79 boys born in Italy in 2024. Number 13 there.
1 in 372, England and Wales
Say it IB-ruh-heem
Rose and fell with Theo
Common in France, England and Wales, Israel, and 8 more places. Rare in Italy, Poland, Sweden, and 12 more places.
1 in 372 boys born in England and Wales in 2025. Number 70 there.
1 in 91, Norway
Say it toh-BY-us
Rose and fell with Theo · Same initial as Theo
Common in the Netherlands, Austria, Norway, and New Zealand. Rare across France, the UK, Italy, and 16 more places.
1 in 91 boys born in Norway in 2025. Number 15 there.
1 in 516, England and Wales
Say it ROO-ben
Rose and fell with Theo
Common in England and Wales, Sweden, and Spain. Rare in France, Italy, Poland, and 19 more places.
1 in 516 boys born in England and Wales in 2025. Number 100 there.
1 in 456, England and Wales
Say it MY-loh
Rose and fell with Theo
Common in France, England and Wales, the Netherlands, and 11 more places. Rare in Italy, Poland, Israel, and 8 more places.
1 in 456 boys born in England and Wales in 2025. Number 90 there.
1 in 832, England and Wales
Say it ab-DUL-uh
Rose and fell with Theo · Same generation as Theo
Rare in all 24 places we hold figures for.
1 in 832 boys born in England and Wales in 2025. Number 162 there.
1 in 739, England and Wales
Say it ID-ris
Rose and fell with Theo · Same generation as Theo
Rare in all 24 places we hold figures for.
1 in 739 boys born in England and Wales in 2025. Number 142 there.
1 in 1,022, England and Wales
Say it rah-fy-EL
Rose and fell with Theo
Common across Austria, Switzerland, three German cities, and 2 more places. Rare across France, the UK, Italy, and 14 more places.
1 in 1,022 boys born in England and Wales in 2025. Number 189 there.
1 in 906, England and Wales
Say it AH-med
Rose and fell with Theo
Common in Slovenia and 1 more place. Rare across France, the UK, Italy, and 17 more places.
1 in 906 boys born in England and Wales in 2025. Number 168 there.
1 in 178, Catalonia
Say it uh-MEER
Rose and fell with Theo
Common in France, Italy, Israel, and 11 more places. Rare across the UK, Poland, Switzerland, and 7 more places.
1 in 178 boys born in Catalonia in 2025. Number 33 there.
1 in 137, Scotland
Say it MAKS
Rose and fell with Theo
Common across the UK, the Netherlands, three Nordic countries, and 17 more places. Rare in France, Italy, Poland, and 4 more places.
1 in 137 boys born in Scotland in 2025. Number 25 there.
1 in 128, Ireland
Say it LOOK
Same generation as Theo · Greek, like Theo
Common in Ontario, Ireland, Scotland, and 4 more places. Rare in France, England and Wales, Italy, and 15 more places.
1 in 128 boys born in Ireland in 2025. Number 23 there.
1 in 130, Scotland
Say it al-ig-ZAN-der
Greek, like Theo
Common across the UK, Poland, the Netherlands, and 19 more places. Rare in France, Italy, Israel, and 3 more places.
1 in 130 boys born in Scotland in 2025. Number 22 there.
1 in 252, England and Wales
Say it sih-BAS-chun
Same generation as Theo · Greek, like Theo
Loved in Estonia. Common in England and Wales, Italy, Poland, and 10 more places. Rare in France, Israel, the Netherlands, and 13 more places.
1 in 252 boys born in England and Wales in 2025. Number 47 there.
1 in 47, Poland
Say it FIL-ip
Greek, like Theo
Loved in Slovenia. Common in Poland, Austria, Norway, and Croatia. Rare across France, the UK, Italy, and 15 more places.
1 in 47 boys born in Poland in 2025. Number 12 there.
How this list is scored
How this list is scored
Boy names that sit well beside Theo, ranked by the fit engine: names whose popularity moves with Theo's, from the same era, about as common and with shared origins. Rhymes, shared first letters and matching endings count against. Official birth statistics, not forum votes.
Each candidate scores at most about 52 points against the sibling: 22.5 when the two names' popularity curves moved together across regions and decades, up to 13.5 for a similar median birth year, up to 9 for similar popularity, and about 7 for a shared origin. A rhyme costs 27 points and a matching two-letter ending 4.5. Spellings of the sibling's own name and names on the same stem are never suggested. Only one spelling of each name is listed; the others are shown underneath.
Scores use official birth statistics from 40 regions and origins from Wiktionary. How these figures are computed.