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Rankings published in 2026
Tier 1
Tier 2
Tier 3
Notable
Tier 1
Tier 2
Tier 3
Tier 1
Tier 2
Tier 3
Tier 1
Tier 2
Tier 3
Tier 4
Notable
Tier 1
Tier 2
Tier 3
Notable
Linked Reviews
Financial and corporate
Simpson Thacher & Bartlett is a New York-based international law firm with 900 lawyers across 11 offices in the Americas, Asia and Europe. Its Tokyo office was established in 1990.
Focusses / specialisms
The firm’s Tokyo team is known for its work in the foreign M&A, private equity, debt and equity capital markets practice. It is also active in banking and finance and cross-border private fund formation. Regionally, the firm has added a leveraged finance piece to its offering that is based in Hong Kong.
Key clients
Key clients of the firm include All Nippon Airways, Aruhi, Asahi, BofA Securities, Citigroup, Dai-ichi Life Insurance, Daiwa Securities, Goldman Sachs, Mizuho Bank, Morgan Stanley, Japan Airlines and Nissin Foods.
Client feedback: 32nd edition (2022/2023)
Capital markets
“I would highlight two leading partners who have contributed to established capital markets practice by providing solid, reliable technical advice yet keeping in mind commercial reasonableness.”
Investment funds
“Has deep knowledge of the market. Negotiates effectively with LPs, which is very important for a first-time fund of a Japanese emerging manager like us.”
