Leander vs Theo
Leander 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, Leander was ranked #727 and Theo #4 among boys in Scotland.
England and Wales · Boys
In 2024, Leander was ranked #1235 and Theo #12 among boys in England and Wales.
Norway · Boys
In 2025, Leander was ranked #89 and Theo #22 among boys in Norway.
Leander and Theo over time
Leander and Theo appear together in 2 published lists, across 54 years of shared records. Neither was ahead in more lists than the other.
The order between them changed and held in one of those lists — a change in that published list, never a claim that one name displaced the other.
Each reached its own highest recorded position first in 1 of the lists they share.
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 took the other's place near the top
In Norway · Boys, Theo moved into the top 50 at #36 in 2013 as Leander fell out of it to #59, having been #40 the year before.
- One moved ahead of the other
In 2013, Theo moved ahead of Leander in Norway · Boys — #40 and #41 the year before became #59 and #36.
- Repeatedly exchanged positions
Leander and Theo changed places 7 times in Norway · Boys between 1991 and 2025, ending at #89 and #22.
- Closest over the longest run
Across 33 shared years in Norway · Boys, Leander and Theo averaged 40.4 places apart, ending at #89 and #22.
- Longest-running competitions
Leander and Theo were both ranked in Norway · Boys for 33 years, from 1991 to 2025, ending at #89 and #22.
- Peaked in the same years
Both reached their highest recorded position in England and Wales · Boys within 2 years — Leander #1235 in 2024, Theo #9 in 2022.
List by list
Norway · Boys33 shared years, 1991–2025
Leander held the stronger position in 17 of those years, Theo in 16.
Highest recorded here: Leander #38 in 2010, Theo #17 in 2024.
The order changed in 2013: Theo moved ahead. In 2012 they stood at #40 and #41; by 2013 that had become #59 and #36.
Most recent shared year, 2025: Leander #89, Theo #22.
England and Wales · Boys21 shared years, 2001–2024
Leander held the stronger position in 0 of those years, Theo in 21.
Highest recorded here: Leander #1235 in 2024, Theo #9 in 2022.
The order between them never changed and held in this list.
Most recent shared year, 2024: Leander #1235, Theo #12.
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.
Side by side
| Field | Leander | Theo |
|---|---|---|
| Record type | Official statistical record (evidence-only) | Editorially researched profile |
| Gender usage | male | male |
| Meaning | Not yet recorded | Gift of God. |
| Origin | Not yet recorded | Greek, via Theodore/Theodora |
| Pronunciation | /ˈθioʊ/ | |
| Syllables | 2 | 1 |
| Common variants / nicknames | Not yet recorded | Teddy |
| Recorded regional usage | GB-ENW, GB-SCT, NO | AU-NSW, GB-ENW, GB-NIR, GB-SCT, IE, NO, NZ |
| Most recent popularity observation | Norway · Boys #89 (2025) | Republic of Ireland · Boys #21 (2025) |
| Pronunciation clarity (demonstration score) | Not yet recorded | 90/100 |
| Spelling simplicity (demonstration score) | 82/100 | 95/100 |
| International familiarity (demonstration score) | 100/100 | 100/100 |
| Data Confidence | medium | high |
What the data shows
- Theo has a recorded origin (Greek, via Theodore/Theodora); Leander does not have one recorded yet.
- Leander has 2 syllables, compared with 1 for Theo.
- A meaning is recorded for Theo; Leander doesn't have one written yet.
- Both names have recorded usage in GB-ENW, GB-SCT, NO.
- The available evidence gives Leander 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
Leander
Popularity journey
First recorded1991
First recorded at #537 among boys in Norway in 1991 — the earliest year that source publishes this name, not necessarily the earliest it was used.
Norway · Boys
Highest recorded1991–2025
Highest recorded position: #38 among boys in Norway, in 2010 (recorded 1991–2025).
Norway · Boys
Most recent2025
Most recently recorded at #89 among boys in Norway, in 2025.
Norway · 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 #32 among boys in New South Wales, Australia, in 2025.
New South Wales, Australia · Boys