›Summary
A&O Shearman is mapped by Sartori across 47 offices in 29 countries (Global footprint), headquartered in London. Headcount band: 2,500–4,000 attorneys. Strongest mapped practices: Finance & Banking, Corporate & M&A, Litigation & Disputes. It appears in 18 Ranking Atlas pages. Profile compiled from public facts, last verified 23 Jul 2026.
01 — Public record
Facts on file
Compiled from public sources. Figures are shown as bands where exact counts are not published; nothing here is provided by the firm.
Website
Largest mapped office
London, GB
Professionals
2,500–4,000 attorneys banded
Countries covered
29 via 47 offices
Office footprint — mapped metros
47 offices · 29 countriesPrincipal practices
Bold chips mark the firm’s deepest mapped practices (major or strong).
Seniority mix — banded, fee earners
≈800 partners · 350 counsel · 1800+ associates
Mapped from public bios and firm pages; exact counts are not published, so figures are shown as approximate bands.
Sartori Firm Index — footprint (a different lens from the Atlas tiers)
Global · coverage 3 of 368
Composite SFI
SFI sub-index · banded
90.7
Scale
SFI sub-index · banded
55.2
Reach
SFI sub-index · banded
36.4
Hiring
SFI sub-index · banded
The Sartori Firm Index measures footprint and momentum (scale · reach · hiring), not practice quality. It never assigns an Atlas tier, and the Atlas never reuses this number — the two lenses are deliberately separate.
02 — Where this firm is ranked
Ranking Atlas & Firm Index
No composite firm score is published. Atlas tiers are assigned per market or practice from public footprint and evidence; the Firm Index leaderboards are a separate footprint lens.
21 listings · Atlas tiers apply only within their own market or practice
| Listing | Type | Tier | |
|---|---|---|---|
| Best law firms in Abu Dhabi | Atlas ranking | Highly active | → |
| Best law firms in Austin | Atlas ranking | Notable in this field | → |
| Best law firms in United Kingdom | Atlas ranking | Market leaders | → |
| Best law firms in Brussels | Atlas ranking | Established | → |
| Best law firms in Dubai | Atlas ranking | Market leaders | → |
| Best law firms in Germany | Atlas ranking | Established | → |
| Best law firms in Frankfurt | Atlas ranking | Market leaders | → |
| Best law firms in Hong Kong | Atlas ranking | Highly active | → |
| Best law firms in London | Atlas ranking | Market leaders | → |
| Best law firms in Luxembourg | Atlas ranking | Market leaders | → |
| Best law firms in Madrid | Atlas ranking | Established | → |
| Best law firms in Spain | Atlas ranking | Established | → |
| Best law firms in Paris | Atlas ranking | Highly active | → |
| Best law firms in Rome | Atlas ranking | Notable in this field | → |
| Best law firms in Shanghai | Atlas ranking | Notable in this field | → |
| Best law firms in China | Atlas ranking | Notable in this field | → |
| Best law firms in Singapore | Atlas ranking | Market leaders | → |
| Best law firms in Toronto | Atlas ranking | Notable in this field | → |
| Sartori Firm Index — overall | SFI leaderboard | — | → |
| Sartori Firm Index — United Kingdom | SFI leaderboard | — | → |
| Sartori Firm Index — hiring now | SFI leaderboard | — | → |
03 — Sources & verification Last verified 23 Jul 2026 · next review by 23 Aug 2026 · change log
Public sources
- 1 Lawyers in United Kingdom - A&O Shearmanfirm_website · 2026-07-21
- 2 Lawyers in United States - A&O Shearmanfirm_website · 2026-07-21
- 3 Lawyers in The Netherlands - A&O Shearmanfirm_website · 2026-07-21
- 4 Lawyers in France - A&O Shearmanfirm_website · 2026-07-21
- 5 Lawyers in Germany - A&O Shearmanfirm_website · 2026-07-21
- 6 Lawyers in Spain - A&O Shearmanfirm_website · 2026-07-21
- 7 Lawyers in United Arab Emirates (UAE) - A&O Shearmanfirm_website · 2026-07-21
- 8 Lawyers in Belgium - A&O Shearmanfirm_website · 2026-07-21
- 9 Lawyers in Italy - A&O Shearmanfirm_website · 2026-07-21
- 10 Lawyers in Poland - A&O Shearmanfirm_website · 2026-07-21
- 11 Lawyers in Singapore - A&O Shearmanfirm_website · 2026-07-21
- 12 Lawyers in United Kingdom - A&O Shearmanfirm_website · 2026-07-21
- 13 Lawyers in United States - A&O Shearmanfirm_website · 2026-07-21
- 14 Lawyers in The Netherlands - A&O Shearmanfirm_website · 2026-07-21
- 15 Lawyers in France - A&O Shearmanfirm_website · 2026-07-21
- 16 Lawyers in Germany - A&O Shearmanfirm_website · 2026-07-21
- 17 Lawyers in Luxembourg - A&O Shearmanfirm_website · 2026-07-21
- 18 Lawyers in Spain - A&O Shearmanfirm_website · 2026-07-21
- 19 Lawyers in United Arab Emirates (UAE) - A&O Shearmanfirm_website · 2026-07-21
- 20 Lawyers in Belgium - A&O Shearmanfirm_website · 2026-07-21
- 21 Lawyers in Italy - A&O Shearmanfirm_website · 2026-07-21
- 22 Lawyers in Poland - A&O Shearmanfirm_website · 2026-07-21
- 23 Lawyers in Singapore - A&O Shearmanfirm_website · 2026-07-21
- 24 A&O Shearman — news & announcementsfirm_website · 2026-07-21
Know the limits of this data
- —Figures are bands, not audited counts; public sources lag reality by weeks or months.
- —Atlas tiers are Sartori’s independent editorial opinion — not the firm’s claim, and not a client-satisfaction measure.
- —No firm-level numeric score exists; Atlas tiers apply only within their own market or practice.
- —No third-party legal-directory band is used as an input.
Corrections from the firm or its representatives are reviewed within five working days.
Change log
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Discuss a mandate →A&O Shearman is profiled here independently by Sartori. This page is not affiliated with, endorsed by, or produced in cooperation with the firm; firm names are used for identification only and no logo or brand assets are reproduced. Rankings reflect Sartori’s editorial methodology and public mapping — they are not legal advice, nor a recommendation to instruct counsel.