Company lists · Data refreshed September 2026

Top 16 International business law firms based in San Juan, United States

RevenueBase identified 25 international business law firms headquartered in San Juan, United States as of September 2026 and tracks 541 professional contacts across them, including 167 with verified work emails. New York is the largest hub.

This list covers international business law firms headquartered in San Juan, United States, matched on what each company actually does as described in its own words. Ranked by team size, largest first. Every row shows the company's own description, how directly it supports the match, and when it was last checked. Data refreshed September 4, 2026.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase SmartSearch, the natural-language company search RevenueBase customers use to build their own targeted lists and unlock verified emails and direct dials at the companies on them. How these lists are built and judged.

How to read this list HQ checked on every row Match evidence on every row Refreshed Sep 4, 2026 86% judged on-target in blind review
25Companies
541Contacts tracked
167Verified emails
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The 16 largest international business law firms based in San Juan, United States

Ranked by team size
Top 16 of 25 international business law firms based in San Juan, United States, ranked by team size, largest first. Data refreshed Sep 4, 2026. Evidence rates how directly each company's own description names international business law firms: strong (names it), partial (names part of it), indirect (matched on its full profile rather than the summary shown). Click a count to unlock that company's people.
#CompanyHeadquartersEmployeesContacts
1
O'neill & Borges LLCPartial evidence
San Juan, United StatesHQ checked Sep 4, 202651-200109

“YOUR BUSINESS PARTNER IN PUERTO RICO O’Neill & Borges LLC is a full-service law firm established in 1962, and located in San Juan, Puerto Rico.”

Source: company website · checked Sep 4, 2026
2
Ferraiuoli LLCPartial evidence
San Juan, United StatesHQ checked Sep 4, 202651-200105

“Located in the midst of the Golden Mile in the Hato Rey ward of the Municipality of San Juan, Ferraiuoli LLC is a thriving law firm that boasts a select staff of energetic and…”

Source: company website · checked Sep 4, 2026
3San Juan, United StatesHQ checked Sep 4, 202651-20071

“Full-service law firm based in San Juan, Puerto Rico founded more than 30 years ago; specialized in corporate law, litigation, taxes, labor and employment, and environmental.”

Source: company website · checked Sep 4, 2026
4San Juan, United StatesHQ checked Sep 4, 202611-5023

“Casillas, Santiago & Torres LLC is a boutique law firm providing legal advice to businesses on Labor & Employment, Corporate, Tax, Employee Benefits, Litigation, Real Estate and…”

Source: company website · checked Sep 4, 2026
5
Carrión Sánchez, LLCIndirect evidence
San Juan, United StatesHQ checked Sep 4, 202611-5022

“Carrión Sánchez, LLC is a highly dynamic legal firm comprised of a group legal professionals focused in providing counseling in tax and business matters among other areas.”

Source: company website · checked Sep 4, 2026
6
Schuster LLC LittlerIndirect evidence
San Juan, United StatesHQ checked Sep 4, 202611-5015

“Founded in 1995, Schuster LLC has grown steadily, with an ever expanding base of corporate clients.”

Source: company website · checked Sep 4, 2026
7San Juan, United StatesHQ checked Sep 4, 202651-20012
Source: company website · checked Sep 4, 2026
8San Juan, United StatesHQ checked Sep 4, 202611-5012

“Founded in 2002 by the Chairman and two of the principal partners of the Corporate Finance and Banking Department of a major Hato Rey law firm, we operate as a full service firm.”

Source: company website · checked Sep 4, 2026
9San Juan, United StatesHQ checked Sep 4, 202651-20011

“For 50 years Goldman Antonetti & Cordova (GAC) has provided local, regional and international clients with legal counsel.”

Source: company website · checked Sep 4, 2026
10San Juan, United StatesHQ checked Sep 4, 202611-509

“Morell Cartagena & Dapena LLC was founded by Pedro A.”

Source: company website · checked Sep 4, 2026
11San Juan, United StatesHQ checked Sep 4, 202611-507

“Bauzá Brau Irizarry & Silva (“BIOS Law”) is a boutique law firm located in San Juan, Puerto Rico.”

Source: company website · checked Sep 4, 2026
12
Smchico LAW OfficePartial evidence
San Juan, United StatesHQ checked Sep 4, 20261-104

“Specializing in Labor and Employment Law, Litigation & Human Resource Consulting and Administration.”

Source: company website · checked Sep 4, 2026
13
Sydney Denson LLCPartial evidence
San Juan, United StatesHQ checked Sep 4, 20261-104

“Sydney Denson is a boutique law firm uniquely qualified to provide expert advice regarding Public-Private Partnerships (P3), Procurement Management, Disaster Recovery, Public…”

Source: company website · checked Sep 4, 2026
14San Juan, United StatesHQ checked Sep 4, 20261-102

“Abogado en Puerto Rico | Lawyer in Puerto Rico | Lawyer PR | Abogado PR | Legal Services | Legal Advice | Federal | State | Estatal | The Law Firm of Alejandro Bellver Espinosa is…”

Source: company website · checked Sep 4, 2026
15
Valentin LLCPartial evidence
San Juan, United StatesHQ checked Sep 4, 20261-101

“Valentín LLC is a boutique legal and strategic advisory firm with deep expertise in aviation law, corporate governance, and cross-border regulatory compliance.”

Source: company website · checked Sep 4, 2026
16
P.A. Barcelo, LLCIndirect evidence
San Juan, United StatesHQ checked Sep 4, 20261-101

“P.A.”

Source: company website · checked Sep 4, 2026

Showing 16 of 25 international business law firms based in San Juan, United States

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International business law firms based in San Juan, United States at a glance

As of Sep 4, 2026
1-10Median size (employees)
New YorkLargest hub · 825 HQs
Contacts with mobile numbers
Sep 4, 2026Data refreshed

Companies by employee count

1-10
14
11-50
6
51-200
5

Email recency for this list is measured across the whole United States list rather than this city, so it is reported there. Company counts and contact totals on this page are exact for San Juan, over 25 companies.

How this list was built

Company categories are rarely black and white. RevenueBase reads each company's own description of its business to decide whether it belongs among international business law firms, so some rows will be adjacent to the category rather than pure plays. The description and evidence rating on every row are there so you can check each match yourself.

Source
The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase SmartSearch, the natural-language company search available to every RevenueBase user.
What qualifies
Companies headquartered in San Juan, United States whose own description of what they do matches “international business law firms”. Matching reads each company's description, not its industry code or its name.
What we exclude
Companies whose own description does not clearly place them among international business law firms, and records with no verified work email. Companies headquartered outside San Juan are excluded even when they keep an office there.
Match quality
In blind human judging of this matching method, 86% of matched companies were on target. Expect roughly 1 in 7 rows to be adjacent to the category rather than a pure play. Every row shows the company's own description and an evidence rating so you can judge each match yourself. Read the full methodology: how the lists are built, how the judging worked, and what the figure means.
Ranking
Team size, largest first: companies are ordered by the number of professionals RevenueBase tracks at each one. Employee ranges shown are reported bands, for context.
Verification
Every listed company carries at least one verified work email, 167 across the full list. Contacts re-verify on a rolling cadence, and each contact's own verification date is shown inside RevenueBase.
Refresh
This page's figures were pulled from the company graph on September 4, 2026. Lists refresh periodically as the graph is re-checked.
Corrections
Wrong category, wrong headquarters, or a company that has closed? Use “Report an issue” on any row. Reports go to the RevenueBase Data Team and feed back into the company graph.

International business law firms by metro in the United States

Frequently asked

How many international business law firms are there based in San Juan, United States?

RevenueBase identified 25 international business law firms headquartered in San Juan, United States as of September 2026, matched on each company's own description of what it does rather than its industry code.

What is the largest company on this list?

O'neill & Borges LLC, headquartered in San Juan, tops this list with the largest team on record.

Which city has the most international business law firms?

New York leads with 825 headquartered companies, followed by Chicago (321) and Los Angeles (302).

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work the top results, verified emails and direct dials included. Upgrading unlocks all 167 verified decision-maker contacts tracked across these 25 companies.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on September 4, 2026.

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About this data

RevenueBase is a B2B data infrastructure company. Its company graph covers 60 million companies and 398.9 million professional contacts, with emails verified on a rolling cadence rather than scraped once and left to decay. These company lists are generated directly from that graph with RevenueBase SmartSearch, the same natural-language company search every RevenueBase user has: describe a market in plain words, get the companies that match, and add verified emails and direct dials for the people at them. It is the same data that powers RevenueBase's B2B data products, and a free account includes 500 credits to start. How these lists are built and judged.