Company lists · Data refreshed September 2026

Top 25 Big 5 law firms based in Oklahoma City, United States

Name: Big 5 law firms based in Oklahoma City, United States
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 23, 2026 61 companies tracked

RevenueBase identified 61 big 5 law firms headquartered in Oklahoma City, United States as of September 2026 and tracks 1,413 professional contacts across them, including 732 with verified work emails. Across the United States, New York is the largest hub for this category (1,021 companies); Oklahoma City has 61.

This list covers big 5 law firms headquartered in Oklahoma City, 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, its RevenueBase Smart Search rating, and when it was last checked. Data refreshed September 23, 2026.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase Smart Search, 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 RevenueBase Smart Search rating on every row Refreshed Sep 23, 2026 86% judged on-target in blind review

61Companies

1,413Contacts tracked

732Verified emails

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The 25 largest big 5 law firms based in Oklahoma City, United States

Ranked by team size

Top 25 of 61 big 5 law firms based in Oklahoma City, United States, ranked by team size, largest first. Data refreshed Sep 23, 2026. RevenueBase Smart Search rates how each company's information relates to big 5 law firms: strong evidence (its own description names it), partial (names part of it), indirect (matched on the rest of its profile rather than the description shown). Click a contact count to view that company's people.
#	Company	RevenueBase Smart Search	Headquarters	Employees	Contacts
1	Mcafee & Taft	Partial evidence	Oklahoma City, OK, United StatesHQ checked Sep 23, 2026	201-500	403 contacts →
	Partial evidence “By rigorously maintaining the highest standards of legal excellence, the Oklahoma-based law firm of McAfee & Taft has grown to become one of the largest and most respected…” Source: RevenueBase Database · checked Sep 23, 2026
2	Crowe Dunlevy	Indirect evidence	Oklahoma City, OK, United StatesHQ checked Sep 23, 2026	201-500	237 contacts →
	Indirect evidence “For more than 120 years, Crowe Dunlevy has provided comprehensive legal services to clients ranging from individuals to Fortune 100 companies across the nation and the world.” Source: RevenueBase Database · checked Sep 23, 2026
3	Phillips Murrah	Indirect evidence	Oklahoma City, OK, United StatesHQ checked Sep 23, 2026	51-200	110 contacts →
	Indirect evidence “Phillips Murrah P.C.” Source: RevenueBase Database · checked Sep 23, 2026
4	Arnold & Smith Law, Pllc	Indirect evidence	Oklahoma City, OK, United StatesHQ checked Sep 23, 2026	201-500	88 contacts →
	Indirect evidence “Founded by managing partners Todd W.” Source: RevenueBase Database · checked Sep 23, 2026
5	Ball Morse Lowe Pllc	Partial evidence	Oklahoma City, OK, United StatesHQ checked Sep 23, 2026	51-200	59 contacts →
	Partial evidence “Ball Morse Lowe, PLLC is a full service law firm with an extensive practice in family law, oil and gas, real property, business transactions and commercial litigation, and probate…” Source: RevenueBase Database · checked Sep 23, 2026
6	Pierce Couch Hendrickson Baysinger & Green, L.L.P	Indirect evidence	Oklahoma City, OK, United StatesHQ checked Sep 23, 2026	51-200	48 contacts →
	Indirect evidence “Originally founded in 1923 as a two-man partnership, Pierce Couch Hendrickson Baysinger & Green has grown to employ 40+ attorneys, with offices located in Oklahoma City at the…” Source: RevenueBase Database · checked Sep 23, 2026
7	Hartzog Conger Cason	Partial evidence	Oklahoma City, OK, United StatesHQ checked Sep 23, 2026	11-50	47 contacts →
	Partial evidence “Hartzog Conger Cason is widely recognized as one of the most prestigious law firms in Oklahoma.” Source: RevenueBase Database · checked Sep 23, 2026
8	Dunlap Codding PC	Indirect evidence	Oklahoma City, OK, United StatesHQ checked Sep 23, 2026	11-50	30 contacts →
	Indirect evidence “Dunlap Codding P.C.” Source: RevenueBase Database · checked Sep 23, 2026
9	Foliart Huff Ottaway & Bottom	Indirect evidence	Oklahoma City, OK, United StatesHQ checked Sep 23, 2026	11-50	28 contacts →
	Indirect evidence “Our attorneys provide legal consulting services to national, regional, and local businesses, including health care providers, product and pharmaceutical manufacturers, oilfield…” Source: RevenueBase Database · checked Sep 23, 2026
10	Bass LAW	Partial evidence	Oklahoma City, OK, United StatesHQ checked Sep 23, 2026	11-50	25 contacts →
	Partial evidence “TRADITION + VISION With a reputation for quality, expertise and results dating back to our founding in 1934, Bass Law is a full-service civil law firm representing individuals…” Source: RevenueBase Database · checked Sep 23, 2026
11	Ryan Whaley	Partial evidence	Oklahoma City, OK, United StatesHQ checked Sep 23, 2026	11-50	24 contacts →
	Partial evidence “Ryan Whaley is a business litigation, energy, and environmental law firm based in Oklahoma City with national, regional, and state clients.” Source: RevenueBase Database · checked Sep 23, 2026
12	Durbin Larimore & Bialick, P.C	Indirect evidence	Oklahoma City, OK, United StatesHQ checked Sep 23, 2026	11-50	24 contacts →
	Indirect evidence “For more than thirty years, Durbin, Larimore & Bialick has implemented a progressive and strategic approach to achieve unparalleled results for its clients, establishing a…” Source: RevenueBase Database · checked Sep 23, 2026
13	Goolsby, Proctor, Heefner & Gibbs	Partial evidence	Oklahoma City, OK, United StatesHQ checked Sep 23, 2026	11-50	21 contacts →
	Partial evidence “Goolsby, Proctor, Heefner & Gibbs is a full service law firm serving companies and individuals in Oklahoma and the surrounding areas.” Source: RevenueBase Database · checked Sep 23, 2026
14	Christensen LAW Group Pllc	Partial evidence	Oklahoma City, OK, United StatesHQ checked Sep 23, 2026	11-50	16 contacts →
	Partial evidence “Christensen Law Group provides diverse legal services to major banking, brokerage, financial, insurance and industrial entities in Oklahoma and abroad.” Source: RevenueBase Database · checked Sep 23, 2026
15	Resolution Legal Group	Indirect evidence	Oklahoma City, OK, United StatesHQ checked Sep 23, 2026	11-50	14 contacts →
	Indirect evidence “Your lawyers should understand business, be business people themselves, and have a vested interest in your success.” Source: RevenueBase Database · checked Sep 23, 2026
16	Fulmer Sill	Partial evidence	Oklahoma City, OK, United StatesHQ checked Sep 23, 2026	11-50	12 contacts →
	Partial evidence “The founders of Fulmer Sill wanted to move away from the traditional law firm structure in order to facilitate a more efficient and collaborative environment.” Source: RevenueBase Database · checked Sep 23, 2026
17	Chubbuck Duncan Robey & Moen, P.C	Indirect evidence	Oklahoma City, OK, United StatesHQ checked Sep 23, 2026	1-10	12 contacts →
	Indirect evidence “SERVING OUR STATE AND COMMUNITY Chubbuck, Duncan & Robey is committed to quality legal representation that is critical to the success of our clients.” Source: RevenueBase Database · checked Sep 23, 2026
18	Cheek & Falcone, Pllc	Indirect evidence	Oklahoma City, OK, United StatesHQ checked Sep 23, 2026	11-50	11 contacts →
	Indirect evidence “Whether in business or personal legal matters, we know that you expect and deserve to receive efficient and effective results from professional and experienced attorneys at a…” Source: RevenueBase Database · checked Sep 23, 2026
19	Jennings Teague, PC	Indirect evidence	Oklahoma City, OK, United StatesHQ checked Sep 23, 2026	11-50	9 contacts →
	Indirect evidence “JENNINGS TEAGUE is a firm of civil litigators and trial lawyers in Oklahoma City.” Source: RevenueBase Database · checked Sep 23, 2026
20	Derryberry & Naifeh, LLP	Indirect evidence	Oklahoma City, OK, United StatesHQ checked Sep 23, 2026	1-10	7 contacts →
	Indirect evidence “At Derryberry & Naifeh, LLP, we have decades of experience representing clients throughout Oklahoma.” Source: RevenueBase Database · checked Sep 23, 2026
21	Tomlinson Mckinstry, P.C	Partial evidence	Oklahoma City, OK, United StatesHQ checked Sep 23, 2026	11-50	6 contacts →
	Partial evidence “Oklahoma City law firm with a civil practice, with practitioners who emphasize products liability and complex business litigation, employer defense, insurance defense, patents and…” Source: RevenueBase Database · checked Sep 23, 2026
22	Fuller Tubb Bickford Warmington & Panach, Pllc	Indirect evidence	Oklahoma City, OK, United StatesHQ checked Sep 23, 2026	1-10	5 contacts →
	Indirect evidence “For over sixty years since our founding in 1946, our firm has been providing clients with the highest quality legal services in a thoughtful and creative manner.” Source: RevenueBase Database · checked Sep 23, 2026
23	Calvert LAW Firm	Partial evidence	Oklahoma City, OK, United StatesHQ checked Sep 23, 2026	11-50	4 contacts →
	Partial evidence “Calvert Law Firm is committed to providing cost-efficient, value-added legal services.” Source: RevenueBase Database · checked Sep 23, 2026
24	Rainey Law, LLP	Indirect evidence	Oklahoma City, OK, United StatesHQ checked Sep 23, 2026	1-10	3 contacts →
	Indirect evidence “We provide high quality legal services with the highest standard of excellence and integrity.” Source: RevenueBase Database · checked Sep 23, 2026
25	Silverline Legal	Partial evidence	Oklahoma City, OK, United StatesHQ checked Sep 23, 2026	1-10	3 contacts →
	Partial evidence “Silverline Legal exists at the intersection of technology and law.” Source: RevenueBase Database · checked Sep 23, 2026

RevenueBase Smart Search

RevenueBase Smart Search assesses information from a company’s LinkedIn profile, information supplied directly by the company, its website, and other publicly available sources. It uses that information to rate how closely the company relates to this list’s category: big 5 law firms. Every row carries its rating and the description the rating was read from, so each one can be checked rather than taken on trust.

Strong evidence: The company's own public description of its business names big 5 law firms.
Partial evidence: Its own public description names part of big 5 law firms, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name big 5 law firms. The match rests on the rest of the company's public profile rather than the one sentence quoted here, so this is the rating to check first.

RevenueBase Smart Search is how these lists are built: RevenueBase's data engine and AI assemble the companies that match a category defined in a user's own words, so a list can be about what companies actually do rather than about whichever industry code they were filed under.

Showing 25 of 61 big 5 law firms based in Oklahoma City, United States

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Big 5 law firms based in Oklahoma City, United States at a glance

As of Sep 23, 2026

51.8%Verified-email coverage

23.2Average contacts per company

11-50Median size (employees)

Sep 23, 2026Page data refreshed

Companies by employee count

1-10

11-50

51-200

201-500

Email recency for this list is measured across the whole United States list rather than for Oklahoma City, so it is reported there. Company counts and contact totals on this page are exact for Oklahoma City, over 61 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 big 5 law firms, so some rows will be adjacent to the category rather than pure plays. The description and RevenueBase Smart Search 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 Smart Search, the natural-language company search available to every RevenueBase user.
What qualifies: Companies headquartered in Oklahoma City, United States whose own description of what they do matches “big 5 law firms”. Matching reads each company's description, not its industry code or its name.
RevenueBase Smart Search: RevenueBase Smart Search is how this list is assembled and how each row is rated. RevenueBase's data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to a category defined in a user's own words. Each row is rated strong evidence (its own description names big 5 law firms), partial evidence (it names part of the category) or indirect evidence (the description shown names none of it and the match rests on the rest of the company's profile). The description supporting each rating is quoted on the row.
What we exclude: Companies whose own description does not clearly place them among big 5 law firms, and records with no verified work email. Companies headquartered outside Oklahoma City 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 its RevenueBase Smart Search 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, 732 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 23, 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.

Big 5 law firms by metro in the United States

Frequently asked

What is RevenueBase Smart Search?

RevenueBase Smart Search is how RevenueBase decides which companies belong on this list and how strongly each one fits. Its data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to the category the list is about. Each row is rated strong evidence when the company's own description names big 5 law firms, partial evidence when it names part of the category, and indirect evidence when the description shown names none of it and the match rests on the rest of the company's profile.

How many big 5 law firms are there based in Oklahoma City, United States?

RevenueBase identified 61 big 5 law firms headquartered in Oklahoma City, 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?

Mcafee & Taft, headquartered in Oklahoma City, tops this list with the largest team on record.

Which city in the United States has the most big 5 law firms?

New York leads the United States with 1,021 headquartered companies, followed by Chicago (492) and Los Angeles (477). Oklahoma City has 61.

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 732 verified decision-maker contacts tracked across these 61 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 23, 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 Smart Search, 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.