Theo dog name
We found 745 dogs named Theo in the public pet registers of 21 places. Combining all places, Theo is the #161 dog name. Almost all dogs named Theo are male.
🐱 Theo is also a popular cat name (#67 for cats, 61 cats).
Theo as a dog name, by place
| Place | Rank | Dogs | Years |
|---|---|---|---|
| Allegheny County United States | #383 of 51,228 | 174 | 2003–2026 |
| New York City United States | #136 of 34,500 | 358 | 2014–2025 |
| Toronto Canada | #184 of 10,500 | 43 | 2019 |
| Seattle United States | #62 of 8,191 | 50 | 2026 |
| Cambridge United States | #82 of 4,375 | 20 | 2017–2026 |
| Vancouver Canada | #666 of 4,602 | 3 | 1999–2026 |
| Zurich Switzerland | #111 of 5,788 | 9 | 2025 |
| Noosa Australia | #624 of 3,045 | 2 | 2017 |
| Laval Canada | #23 of 2,965 | 39 | 2017–2026 |
| Worcester United States | #233 of 2,906 | 5 | 2026 |
| Maple Ridge Canada | #78 of 2,440 | 11 | 2026 |
| Basel Switzerland | #170 of 3,446 | 5 | 2026 |
| Victoria Canada | #124 of 2,588 | 8 | 2025 |
| Surf Coast Shire Australia | #677 of 1,974 | 1 | 2016 |
| Framingham United States | #335 of 1,965 | 2 | 2020 |
| Richmond United States | #191 of 2,347 | 3 | 2018 |
| Tacoma United States | #264 of 1,917 | 2 | 2021 |
| Corangamite Shire Australia | #214 of 1,161 | 2 | 2023 |
| Port Moody Canada | #63 of 1,280 | 5 | 2019 |
| Villavicencio Colombia | #214 of 717 | 1 | 2026 |
| Burlington United States | #55 of 641 | 2 | 2022 |
Rank among all names in that place's register ("in top N" where only a top list is published). "Per 10,000" is how many of every 10,000 registered dogs there are named Theo. Click a column to sort. See data sources.
Female or male?
13 female and 616 male dogs named Theo, in the places that record sex.
Theo over the years
Dogs named Theo per 10,000 dogs, by the year of registration or licence (varies by place). Hover a bar for the number.
Breeds of dogs named Theo
Compared to all dogs, Theo is especially common among Goldendoodles (3.8×), French Bulldogs (2.8×), Welsh Corgis (2.8×), Cavalier King Charles Spaniels (2.6×) and Cockapoos (2.4×).
Based on 617 dogs named Theo with a known breed. Crosses are counted as their first-named breed.
Famous dogs named Theo
From Wikidata. More famous dogs
Theo as a baby name
Theo was the #82 boys' name in the US in 2025 (3,945 babies). Elsewhere it ranks #3 for boys in Wales, #6 for boys in Germany, #6 for boys in Scotland and #7 for boys in Denmark. See Theo as a baby name on MixedName, including which languages use it.
Similar dog names
Dog names ranked near Theo
Top dog names · All dog names starting with T · Theo as a cat name