Oscar vs Theo
Oscar and Theocompared on official birth-registration statistics and Namewise's recorded data. This page states what each name's record shows — it never picks a winner or scores one name against the other.
Head to head
Ranks are only compared within one published list and one year. Two ranks from different years, from a boys' and a girls' list, or from different registrars are not comparable, so they are not placed side by side.
Scotland · Boys
In 2024, Oscar was ranked #22 and Theo #4 among boys in Scotland.
Northern Ireland · Boys
In 2024, Oscar was ranked #34 and Theo #5 among boys in Northern Ireland.
England and Wales · Boys
In 2025, Oscar was ranked #8 and Theo #12 among boys in England and Wales.
New South Wales, Australia · Boys
In 2025, Oscar was ranked #17 and Theo #32 among boys in New South Wales, Australia.
New Zealand · Boys
In 2023, Oscar was ranked #20 and Theo #19 among boys in New Zealand.
Republic of Ireland · Boys
In 2025, Oscar was ranked #31 and Theo #21 among boys in Republic of Ireland.
Norway · Boys
In 2025, Oscar was ranked #51 and Theo #22 among boys in Norway.
Oscar and Theo over time
Oscar and Theo appear together in 5 published lists, across 127 years of shared records. Oscar held the stronger position in more years in 5 of them, Theo in 0.
The order between them changed and held in 3 of those lists — a change in that published list, never a claim that one name displaced the other.
Oscar reached its own highest recorded position earlier in 5 of those lists, and Theo in none. Each position is a place inside its own list, so this compares when they peaked and never how high.
Counted list by list. Two names in the same published list are measured on the same scale in the same year, so those comparisons are real — but positions from different lists are not, so nothing here is combined into an overall standing.
How this pair is related
The relationship kinds these two qualify for, each under its own stated rule. Every one is drawn from a list they both appear in.
- One moved ahead of the other
In 2018, Theo moved ahead of Oscar in Northern Ireland · Boys — #36 and #48 the year before became #42 and #18.
- Repeatedly exchanged positions
Oscar and Theo changed places 5 times in Norway · Boys between 1986 and 2025, ending at #51 and #22.
- Closest over the longest run
Across 30 shared years in England and Wales · Boys, Oscar and Theo averaged 41.7 places apart, ending at #8 and #12.
- Longest-running competitions
Oscar and Theo were both ranked in England and Wales · Boys for 30 years, from 1996 to 2025, ending at #8 and #12.
- Peaked in the same years
Both reached their highest recorded position in New Zealand · Boys within 2 years — Oscar #11 in 2022, Theo #19 in 2023.
List by list
Norway · Boys36 shared years, 1986–2025
Oscar held the stronger position in 22 of those years, Theo in 14.
Highest recorded here: Oscar #35 in 2013, Theo #17 in 2024.
The order changed in 2017: Theo moved ahead. In 2016 they stood at #36 and #42; by 2017 that had become #40 and #35.
Most recent shared year, 2025: Oscar #51, Theo #22.
England and Wales · Boys30 shared years, 1996–2025
Oscar held the stronger position in 30 of those years, Theo in 0.
Highest recorded here: Oscar #7 in 2013, Theo #9 in 2022.
The order between them never changed and held in this list.
Most recent shared year, 2025: Oscar #8, Theo #12.
Republic of Ireland · Boys29 shared years, 1996–2025
Oscar held the stronger position in 24 of those years, Theo in 5.
Highest recorded here: Oscar #30 in 2021, Theo #13 in 2024.
The order changed in 2021: Theo moved ahead. In 2020 they stood at #31 and #34; by 2021 that had become #30 and #24.
Most recent shared year, 2025: Oscar #31, Theo #21.
Northern Ireland · Boys22 shared years, 2003–2024
Oscar held the stronger position in 15 of those years, Theo in 7.
Highest recorded here: Oscar #24 in 2014, Theo #4 in 2022.
The order changed in 2018: Theo moved ahead. In 2017 they stood at #36 and #48; by 2018 that had become #42 and #18.
Most recent shared year, 2024: Oscar #34, Theo #5.
New Zealand · Boys10 shared years, 2014–2023
Oscar held the stronger position in 9 of those years, Theo in 1.
Highest recorded here: Oscar #11 in 2022, Theo #19 in 2023.
The order between them never changed and held in this list.
Most recent shared year, 2023: Oscar #20, Theo #19.
Two names moving past each other in a ranking is a fact about the ranking. Namewise does not claim one name displaced the other, that families chose between them, or that either influenced the other — none of that is in this data.
Where to go next
Comparisons that share a name, a rule or a published list with this one. Each is an existing comparison page with its own evidence — nothing here says these pairs are alike.
Other comparisons involving Oscar
Pairs where Oscar shares a published list with another name, each measured inside one registrar's own list.
- Oscar vs Taylor
In 1996 they stood at #128 and #121 in England and Wales · Boys, 7 places apart; by 2025 they were #8 and #507.
Oscar · Taylor · 30 shared years, 1996–2025 · Started together, ended far apart
- Oscar vs Hayden
In 1996 they stood at #128 and #124 in England and Wales · Boys, 4 places apart; by 2025 they were #8 and #314.
Oscar · Hayden · 30 shared years, 1996–2025 · Started together, ended far apart
- Morten vs Oscar
Over 75 shared years in Norway · Boys, Oscar rose about as far as Morten fell — from #107 and #263 in 1945 to #214 and #51 in 2025.
Morten · Oscar · 75 shared years, 1945–2025 · Mirrored each other
- Peter vs Oscar
Over 75 shared years in Norway · Boys, Oscar rose about as far as Peter fell — from #106 and #263 in 1945 to #174 and #51 in 2025.
Peter · Oscar · 75 shared years, 1945–2025 · Mirrored each other
Other comparisons involving Theo
Pairs where Theo shares a published list with another name, each measured inside one registrar's own list.
- Arthur vs Theo
Arthur and Theo both rose over the same years in 5 registrars — England and Wales · Boys; New Zealand · Boys; Northern Ireland · Boys; Norway · Boys; Republic of Ireland · Boys. Each list is measured against its own starting position; the positions are never combined.
Arthur · Theo · 37 shared years, 1986–2025 · Moved together in several countries
- Henry vs Theo
Henry and Theo both rose over the same years in 5 registrars — England and Wales · Boys; New Zealand · Boys; Northern Ireland · Boys; Norway · Boys; Republic of Ireland · Boys. Each list is measured against its own starting position; the positions are never combined.
Henry · Theo · 37 shared years, 1986–2025 · Moved together in several countries
- Theo vs Archie
Theo and Archie both rose over the same years in 4 registrars — England and Wales · Boys; New Zealand · Boys; Northern Ireland · Boys; Republic of Ireland · Boys. Each list is measured against its own starting position; the positions are never combined.
Theo · Archie · 30 shared years, 1996–2025 · Moved together in several countries
- Theo vs Arlo
Theo and Arlo both rose over the same years in 4 registrars — England and Wales · Boys; New Zealand · Boys; Northern Ireland · Boys; Republic of Ireland · Boys. Each list is measured against its own starting position; the positions are never combined.
Theo · Arlo · 27 shared years, 1999–2025 · Moved together in several countries
Other pairs with the same kind of relationship
Pairs that qualify under the same rule as this one — moved together in several countries.
- Christopher vs Paul
Christopher and Paul both fell over the same years in 6 registrars — England and Wales · Boys; New South Wales, Australia · Boys; New Zealand · Boys; Northern Ireland · Boys; Norway · Boys; Republic of Ireland · Boys. Each list is measured against its own starting position; the positions are never combined.
Christopher · Paul · 80 shared years, 1946–2025 · Moved together in several countries
- Oliver vs Leo
Oliver and Leo both rose over the same years in 6 registrars — England and Wales · Boys; New South Wales, Australia · Boys; New Zealand · Boys; Northern Ireland · Boys; Norway · Boys; Republic of Ireland · Boys. Each list is measured against its own starting position; the positions are never combined.
Oliver · Leo · 63 shared years, 1959–2025 · Moved together in several countries
- Oliver vs Luca
Oliver and Luca both rose over the same years in 6 registrars — England and Wales · Boys; New South Wales, Australia · Boys; New Zealand · Boys; Northern Ireland · Boys; Norway · Boys; Republic of Ireland · Boys. Each list is measured against its own starting position; the positions are never combined.
Oliver · Luca · 43 shared years, 1973–2025 · Moved together in several countries
- Amelia vs Sofia
Amelia and Sofia both rose over the same years in 5 registrars — England and Wales · Girls; New South Wales, Australia · Girls; Northern Ireland · Girls; Norway · Girls; Republic of Ireland · Girls. Each list is measured against its own starting position; the positions are never combined.
Amelia · Sofia · 36 shared years, 1972–2025 · Moved together in several countries
Other pairs ranked together in the 2020s
Pairs both ranked in the same published list at some point between 2020 and 2029.
- Grace vs Gemma
In 1996 they stood at #41 and #50 in England and Wales · Girls, 9 places apart; by 2025 they were #27 and #4867.
Grace · Gemma · 30 shared years, 1996–2025 · Started together, ended far apart
- Ella vs Gemma
In 1996 they stood at #56 and #50 in England and Wales · Girls, 6 places apart; by 2025 they were #46 and #4867.
Ella · Gemma · 30 shared years, 1996–2025 · Started together, ended far apart
- Jasmine vs Gemma
In 1996 they stood at #55 and #50 in England and Wales · Girls, 5 places apart; by 2025 they were #102 and #4867.
Jasmine · Gemma · 30 shared years, 1996–2025 · Started together, ended far apart
- Anna vs Gemma
In 1996 they stood at #47 and #50 in England and Wales · Girls, 3 places apart; by 2025 they were #142 and #4867.
Anna · Gemma · 30 shared years, 1996–2025 · Started together, ended far apart
Side by side
| Field | Oscar | Theo |
|---|---|---|
| Record type | Editorially researched profile | Editorially researched profile |
| Gender usage | male | male |
| Meaning | Possibly 'deer friend' (Irish), or possibly derived from an Old English/Old Norse name meaning 'god spear' — the origin is genuinely disputed. | Gift of God. |
| Origin | Disputed — possibly Irish, possibly Old English/Old Norse | Greek, via Theodore/Theodora |
| Pronunciation | /ˈɑskər/ | /ˈθioʊ/ |
| Syllables | 2 | 1 |
| Common variants / nicknames | Not yet recorded | Teddy |
| Recorded regional usage | AU-NSW, GB-ENW, GB-NIR, GB-SCT, IE, NO, NZ | AU-NSW, GB-ENW, GB-NIR, GB-SCT, IE, NO, NZ |
| Most recent popularity observation | England and Wales · Boys #8 (2025) | England and Wales · Boys #12 (2025) |
| Pronunciation clarity (demonstration score) | 90/100 | 90/100 |
| Spelling simplicity (demonstration score) | 94/100 | 95/100 |
| International familiarity (demonstration score) | 100/100 | 100/100 |
| Data Confidence | medium | high |
What the data shows
- Oscar is recorded with a Disputed — possibly Irish, possibly Old English/Old Norse origin, while Theo is recorded with a Greek, via Theodore/Theodora origin.
- Oscar has 2 syllables, compared with 1 for Theo.
- Oscar's recorded meaning differs from Theo's — see the table above for each.
- Both names have recorded usage in AU-NSW, GB-ENW, GB-NIR, GB-SCT, IE, NO, NZ.
- The available evidence gives Oscar a "medium" Data Confidence level and Theo a "high" level — this reflects how complete and corroborated the underlying evidence is, not a judgement of either name.
How each name got here
Oscar
Popularity journey
First recorded1945
First recorded at #263 among boys in Norway in 1945 — the earliest year that source publishes this name, not necessarily the earliest it was used.
Norway · Boys
Highest recorded1996–2025
Highest recorded position: #7 among boys in England and Wales, in 2013 (recorded 1996–2025).
England and Wales · Boys
Most recent2025
Most recently recorded at #8 among boys in England and Wales, in 2025.
England and Wales · Boys
Theo
Popularity journey
First recorded1986
First recorded at #637 among boys in Norway in 1986 — the earliest year that source publishes this name, not necessarily the earliest it was used.
Norway · Boys
Highest recorded2001–2024
Highest recorded position: #4 among boys in Northern Ireland, in 2022 (recorded 2001–2024).
Northern Ireland · Boys
Most recent2025
Most recently recorded at #12 among boys in England and Wales, in 2025.
England and Wales · Boys