Company lists · Data refreshed September 2026

Top 25 Cannabis industry audit services worldwide

RevenueBase identified 1,712 cannabis industry audit services worldwide as of September 2026 and tracks 12,832 professional contacts across them, including 4,294 with verified work emails. The United States is the largest market and Denver the largest hub.

This list covers cannabis industry audit services worldwide, 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 27, 2026. Country and city lists for cannabis industry audit services follow the table.

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 27, 2026 86% judged on-target in blind review
1,712Companies
12,832Contacts tracked
4,294Verified emails
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The 25 largest cannabis industry audit services worldwide

Ranked by team size
Top 25 of 1,712 cannabis industry audit services worldwide, ranked by team size, largest first. Data refreshed Sep 27, 2026. RevenueBase Smart Search rates how each company's information relates to cannabis industry audit services: 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.
#CompanyRevenueBase Smart SearchHeadquartersEmployeesContacts
1Strong evidenceOrange County, CA, United StatesHQ checked Sep 27, 2026501-1,000615 contacts →

Strong evidence

“Founded in 2008, we’ve grown from a small startup to a global leader in the cannabis industry.”

Source: RevenueBase Database · checked Sep 27, 2026
2Partial evidenceChelmsford, MA, United StatesHQ checked Sep 27, 20261,001-5,000443 contacts →

Partial evidence

“The Cannabist Company (formerly Columbia Care) is one of the largest and most experienced cultivators, manufacturers and retailers of cannabis products and related services in the…”

Source: RevenueBase Database · checked Sep 27, 2026
3Partial evidenceUnion City, NJ, United StatesHQ checked Sep 27, 2026501-1,000432 contacts →

Partial evidence

“TerrAscend is a leading TSX-listed cannabis company with interests across the North American cannabis sector, including operations in Pennsylvania, New Jersey, Maryland, Ohio, and…”

Source: RevenueBase Database · checked Sep 27, 2026
4Indirect evidenceKitchener, ON, CanadaHQ checked Sep 27, 2026201-500385 contacts →

Indirect evidence

“As part of Certified Group, Labstat partners with customers to deliver innovative scientific solutions and expertise – So The World Can Trust In What It Consumes®.”

Source: RevenueBase Database · checked Sep 27, 2026
5Strong evidenceAnn Arbor, MI, United StatesHQ checked Sep 27, 20261,001-5,000359 contacts →

Strong evidence

“C3 Industries is a private, vertically-integrated, multi-state cannabis company with operations in 6 states in the US.”

Source: RevenueBase Database · checked Sep 27, 2026
6Partial evidenceCulver City, CA, United StatesHQ checked Sep 27, 20261,001-5,000311 contacts →

Partial evidence

“MedMen Enterprises is a leading cannabis company in the U.S.”

Source: RevenueBase Database · checked Sep 27, 2026
7Strong evidenceTroy, MI, United StatesHQ checked Sep 27, 2026501-1,000270 contacts →

Strong evidence

“Almost overnight, Cannabis has become a legal, legitimate business and a multi-billion dollar industry.”

Source: RevenueBase Database · checked Sep 27, 2026
8Partial evidenceNew York, NY, United StatesHQ checked Sep 27, 2026501-1,000198 contacts →

Partial evidence

“iAnthus delivers a comprehensive solution for financing and managing licensed cannabis cultivators, processors and dispensaries throughout the United States.”

Source: RevenueBase Database · checked Sep 27, 2026
9Partial evidenceSan Francisco, NY, United StatesHQ checked Sep 27, 2026501-1,000193 contacts →

Partial evidence

“Nabis is the #1 wholesale platform powering over $1B annually in licensed cannabis commerce across the U.S.”

Source: RevenueBase Database · checked Sep 27, 2026
10Strong evidenceNew York, NY, United StatesHQ checked Sep 27, 202651-200185 contacts →

Strong evidence

“LeafLink is the cannabis industry's premier wholesale platform, enabling businesses to manage their entire sales-to-cash process with ease.”

Source: RevenueBase Database · checked Sep 27, 2026
11Partial evidenceDavie, FL, United StatesHQ checked Sep 27, 2026201-500134 contacts →

Partial evidence

“A forefront provider of cannabis testing technologies and methodologies nationwide, our laboratories offer both regulatory and research & development (R&D) testing services in…”

Source: RevenueBase Database · checked Sep 27, 2026
12Indirect evidenceTucson, AZ, United StatesHQ checked Sep 27, 2026n/a113 contacts →

Indirect evidence

“WEED Inc.”

Source: RevenueBase Database · checked Sep 27, 2026
13Partial evidenceCosta Mesa, CA, United StatesHQ checked Sep 27, 2026501-1,000110 contacts →

Partial evidence

“CBOE:$GRAM • OTC:$GRAM Gold Flora Corporation is a female-led, vertically integrated cannabis powerhouse, setting the standard for premium cannabis in California.”

Source: RevenueBase Database · checked Sep 27, 2026
14Partial evidenceLansing, MI, United StatesHQ checked Sep 27, 202651-20098 contacts →

Partial evidence

“ACT LAB is one of the nation’s largest Cannabis and Hemp testing networks, providing critical lab testing services for licensed cultivators and processors.”

Source: RevenueBase Database · checked Sep 27, 2026
15Indirect evidenceLos Angeles, CA, United StatesHQ checked Sep 27, 2026501-1,00097 contacts →

Indirect evidence

“Shryne Group Inc.”

Source: RevenueBase Database · checked Sep 27, 2026
16Strong evidencePortland, OR, United StatesHQ checked Sep 27, 202651-20095 contacts →

Strong evidence

“Established in 2014, Groundworks Industries is made up of the most scientifically-rigorous and elevated brands in cannabis.”

Source: RevenueBase Database · checked Sep 27, 2026
17Partial evidenceMiami, FL, United StatesHQ checked Sep 27, 202651-20095 contacts →

Partial evidence

“At Flowhub, we’re on a mission to make safe cannabis product accessible to everyone on planet Earth.”

Source: RevenueBase Database · checked Sep 27, 2026
18Strong evidencePhoenix, AZ, United StatesHQ checked Sep 27, 2026201-50093 contacts →

Strong evidence

“We are The Pharm and Sunday Goods and we’re on a mission to revolutionize the cannabis industry at scale creating a better, more consistent cannabis experience helping our clients…”

Source: RevenueBase Database · checked Sep 27, 2026
19Partial evidenceSan Francisco, CA, United StatesHQ checked Sep 27, 202651-20080 contacts →

Partial evidence

“SPARC’s roots began early in cannabis regulation, reaching as far back as 1998 when CA Proposition 215 was passed, making medical cannabis available to those with a doctor’s…”

Source: RevenueBase Database · checked Sep 27, 2026
20Partial evidenceChicago, IL, United StatesHQ checked Sep 27, 202651-20078 contacts →

Partial evidence

“Welcome to a new era of Cannabis!”

Source: RevenueBase Database · checked Sep 27, 2026
21Partial evidenceDenver, CO, United StatesHQ checked Sep 27, 202651-20076 contacts →

Partial evidence

“Vicente LLP is the premier cannabis and psychedelics law firm.”

Source: RevenueBase Database · checked Sep 27, 2026
22Partial evidenceAurora, ON, CanadaHQ checked Sep 27, 202651-20073 contacts →

Partial evidence

“Sensi Brands Inc.(SBI) is a vertically integrated licensed cannabis cultivation, processing, and consumer packaged goods company.”

Source: RevenueBase Database · checked Sep 27, 2026
23Indirect evidenceDeerfield, IL, United StatesHQ checked Sep 27, 202651-20073 contacts →

Indirect evidence

“Founded in 1987, CJBS is one of the leading accounting and consulting firms in the Chicago area and a trusted community partner.”

Source: RevenueBase Database · checked Sep 27, 2026
24Partial evidenceCA, United StatesHQ checked Sep 27, 2026501-1,00072 contacts →

Partial evidence

“THE PARENT COMPANY brings together global icon and entrepreneur Shawn “JAY-Z” Carter, entertainment powerhouse ROC NATION, California’s most trusted cannabis brand and leading…”

Source: RevenueBase Database · checked Sep 27, 2026
25Strong evidenceIrvine, CA, United StatesHQ checked Sep 27, 202611-5069 contacts →

Strong evidence

“Petalfast is the first-of-its-kind route-through-market platform for the cannabis industry.”

Source: RevenueBase Database · checked Sep 27, 2026

Showing 25 of 1,712 cannabis industry audit services worldwide

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Cannabis industry audit services worldwide at a glance

As of Sep 27, 2026
33.5%Verified-email coverage
7.5Average contacts per company
1-10Median size (employees)
4.3%Largest-city concentration · Denver
Sep 27, 2026Page data refreshed

Companies by employee count

1-10
1,179
11-50
397
51-200
99
201-500
16
501-1,000
9
1,001-5,000
6
5,001-10,000
1
10001+
1

Email recency is reported on each country list linked below.

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 cannabis industry audit services, 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.
Coverage
Every country. Country and city lists for cannabis industry audit services are linked below.
What qualifies
Companies worldwide whose own description of what they do matches “cannabis industry audit services”. 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 cannabis industry audit services), 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 cannabis industry audit services, and records with no verified work email.
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, 4,294 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 27, 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.

Cannabis industry audit services by location

6 lists · largest first

Every Cannabis industry audit services list RevenueBase publishes, by country and city. Counts are matching companies in each list as of its own refresh date.

Countries

Cities

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 cannabis industry audit services, 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 cannabis industry audit services are there worldwide?

RevenueBase identified 1,712 cannabis industry audit services worldwide 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?

Weedmaps, headquartered in Irvine, tops this list with the largest team on record.

Which country has the most cannabis industry audit services?

The United States leads with 1,079 companies, followed by Canada (166). Every cannabis industry audit services list by country and city is linked on this page.

Which city has the most cannabis industry audit services?

Denver leads with 73 headquartered companies, followed by Los Angeles (57) and Toronto (40).

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 4,294 verified decision-maker contacts tracked across these 1,712 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 27, 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.