Company lists · Data refreshed September 2026

Top 23 Iso audit companies based in Australia

Name: Iso audit companies based in Australia
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 20, 2026 197 companies tracked

RevenueBase identified 197 iso audit companies headquartered in Australia as of September 2026 and tracks 1,434 professional contacts across them, including 542 with verified work emails. Sydney is the largest hub.

This list covers iso audit companies headquartered in Australia, 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 20, 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 20, 2026 86% judged on-target in blind review

197Companies

1,434Contacts tracked

542Verified emails

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The 23 largest iso audit companies based in Australia

Ranked by team size

Top 23 of 197 iso audit companies based in Australia, ranked by team size, largest first. Data refreshed Sep 20, 2026. RevenueBase Smart Search rates how each company's information relates to iso audit companies: 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	GQS	Indirect evidence	Osborne Park, AustraliaHQ checked Sep 20, 2026	51-200	110 contacts →
	Indirect evidence “Worldwide Provider of Inspection, Auditing & Quality Services GQS provides proven, effective and efficient product conformity and assurance services.” Source: RevenueBase Database · checked Sep 20, 2026
2	National Audits Group	Partial evidence	Haymarket, AustraliaHQ checked Sep 20, 2026	11-50	51 contacts →
	Partial evidence “Your Trusted Audit and Assurance Specialist National Audits Group partners with accounting firms across Australia, offering independent audit and assurance services that enhance…” Source: RevenueBase Database · checked Sep 20, 2026
3	Global-Mark	Indirect evidence	North Ryde, AustraliaHQ checked Sep 20, 2026	51-200	47 contacts →
	Indirect evidence “Global-Mark is one of Australia's leading certification providers.” Source: RevenueBase Database · checked Sep 20, 2026
4	Tqcs International	Indirect evidence	Adelaide, AustraliaHQ checked Sep 20, 2026	11-50	43 contacts →
	Indirect evidence “TQCS International (TQCSI) commenced operations in mid-1995 and now operates out of 25+ offices with over certifications in 40+ countries throughout Australia, the Pacific, Asia…” Source: RevenueBase Database · checked Sep 20, 2026
5	AMW Audit	Partial evidence	Joondalup, AustraliaHQ checked Sep 20, 2026	11-50	42 contacts →
	Partial evidence “AMW (Audit) Pty Ltd trading as Anderson Munro & Wyllie (“AMW”) is a registered audit company (auditor number 314299) specialising in providing audit services to small and medium…” Source: RevenueBase Database · checked Sep 20, 2026
6	Global Compliance Certification GCC	Indirect evidence	North Sydney, AustraliaHQ checked Sep 20, 2026	51-200	30 contacts →
	Indirect evidence “Global Compliance Certification (GCC) is a leading independent certification body based in Australia, Japan, Malaysia and the USA.” Source: RevenueBase Database · checked Sep 20, 2026
7	ACO Certification LTD	Indirect evidence	Brisbane City, AustraliaHQ checked Sep 20, 2026	11-50	29 contacts →
	Indirect evidence “Welcome to ACO Certification Ltd.” Source: RevenueBase Database · checked Sep 20, 2026
8	Sustainable Certification	Indirect evidence	Melbourne, AustraliaHQ checked Sep 20, 2026	51-200	27 contacts →
	Indirect evidence “We are a JAS-ANZ accredited conformity assessment body, with a team of experienced auditors guiding our clients through the certification process.” Source: RevenueBase Database · checked Sep 20, 2026
9	LNP Audit And Assurance	Partial evidence	Sydney, AustraliaHQ checked Sep 20, 2026	11-50	26 contacts →
	Partial evidence “LNP Audit and Assurance is a dynamic growing specialist audit and assurance practice.” Source: RevenueBase Database · checked Sep 20, 2026
10	Redbook Inspect	Indirect evidence	Richmond, AustraliaHQ checked Sep 20, 2026	51-200	22 contacts →
	Indirect evidence “RedBook Inspect provide inspections to a range of industries including Retail, Dealer, Rideshare and Finance.” Source: RevenueBase Database · checked Sep 20, 2026
11	Ecaas Certification International	Indirect evidence	Adelaide, AustraliaHQ checked Sep 20, 2026	11-50	20 contacts →
	Indirect evidence “ECAAS is a trusted and dynamic third-party Certification Body with a global reach, dedicated to helping businesses achieve and maintain internationally recognized standards.” Source: RevenueBase Database · checked Sep 20, 2026
12	ISO Certification Experts	Partial evidence	Northmead, AustraliaHQ checked Sep 20, 2026	11-50	19 contacts →
	Partial evidence “We prepare businesses to achieve and maintain International Certifications to ISO Management System Standards by developing customised systems to better manage risk and drive…” Source: RevenueBase Database · checked Sep 20, 2026
13	RED Earth NDT	Indirect evidence	Salisbury North, AustraliaHQ checked Sep 20, 2026	11-50	19 contacts →
	Indirect evidence “Red Earth is a provider of a wide range of Testing, Inspection and Certification services.” Source: RevenueBase Database · checked Sep 20, 2026
14	Certification Partner Global Aust PTY LTD	Indirect evidence	Sydney, AustraliaHQ checked Sep 20, 2026	11-50	19 contacts →
	Indirect evidence “Operating in the Certification Industry for 30 years, CPG has a management team with many years’ of combined experience – we deliver insight, integrity and knowledge in auditing…” Source: RevenueBase Database · checked Sep 20, 2026
15	Independent Inspections	Indirect evidence	Rochedale, AustraliaHQ checked Sep 20, 2026	1-10	17 contacts →
	Indirect evidence “Providing a wide range of Independent Quality Auditing and Reporting Services, to the above industries around Australia.” Source: RevenueBase Database · checked Sep 20, 2026
16	SCI Qual International	Indirect evidence	Birtinya, AustraliaHQ checked Sep 20, 2026	1-10	16 contacts →
	Indirect evidence “SCI-QUAL INTERNATIONAL PTY LTD is a fully Australian owned accredited third party Certification Body.” Source: RevenueBase Database · checked Sep 20, 2026
17	Integrated Compliance Solutions	Partial evidence	Melbourne, AustraliaHQ checked Sep 20, 2026	11-50	14 contacts →
	Partial evidence “At Integrated Compliance Solutions, we deliver innovative, low-burden ISO compliance solutions that are customised and integrated to boost profitability, remove inefficiencies…” Source: RevenueBase Database · checked Sep 20, 2026
18	Jessups	Partial evidence	Cairns City, AustraliaHQ checked Sep 20, 2026	11-50	9 contacts →
	Partial evidence “Jessups is an independent audit and advisory firm which provides expert assistance for organisations to meet their regulatory audit requirements.” Source: RevenueBase Database · checked Sep 20, 2026
19	Adaptive Certifications	Indirect evidence	Central Coast, AustraliaHQ checked Sep 20, 2026	1-10	9 contacts →
	Indirect evidence “The Adaptive team's vision is to provide client-focused certification services.” Source: RevenueBase Database · checked Sep 20, 2026
20	Smartqms	Indirect evidence	Sydney, AustraliaHQ checked Sep 20, 2026	1-10	8 contacts →
	Indirect evidence “BOOST YOUR LABORATORY'S QUALITY AND COMPLIANCE Are you struggling with implementing an efficient quality management system (QMS) in your laboratory?” Source: RevenueBase Database · checked Sep 20, 2026
21	Feddersen Consulting Group	Indirect evidence	Pinkenba, AustraliaHQ checked Sep 20, 2026	1-10	8 contacts →
	Indirect evidence “Feddersen Consulting Group (FCG) is an Australian based management consultancy with over 50 years of combined experience.” Source: RevenueBase Database · checked Sep 20, 2026
22	Atlas Certification PTY LTD	Partial evidence	Adelaide, AustraliaHQ checked Sep 20, 2026	1-10	7 contacts →
	Partial evidence “ATLAS Certification Pty Ltd is an Australian, JASANZ-accredited Certification Body, providing Certification to internationally recognised ISO-standards, such as ISO9001, ISO14001…” Source: RevenueBase Database · checked Sep 20, 2026
23	Certifi International	Partial evidence	Brendale, AustraliaHQ checked Sep 20, 2026	11-50	6 contacts →
	Partial evidence “Certifii are a locally owned and operated Australian based (JASANZ accredited) certification company providing ISO certification services against the management of quality…” Source: RevenueBase Database · checked Sep 20, 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: iso audit companies. 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 iso audit companies.
Partial evidence: Its own public description names part of iso audit companies, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name iso audit companies. 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 23 of 197 iso audit companies based in Australia

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Iso audit companies based in Australia at a glance

As of Sep 20, 2026

37.8%Verified-email coverage

7.3Average contacts per company

1-10Median size (employees)

12.7%Largest-city concentration · Sydney

Sep 20, 2026Page data refreshed

Companies by employee count

1-10

144

11-50

51-200

Email recency for this list is measured worldwide rather than for Australia, so it is reported there. Company counts and contact totals on this page are exact for Australia, over 197 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 iso audit companies, 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 Australia whose own description of what they do matches “iso audit companies”. 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 iso audit companies), 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 iso audit companies, and records with no verified work email. Companies headquartered outside Australia 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, 542 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 20, 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.

Iso audit companies by metro

Iso audit companies in Sydney25

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 iso audit companies, 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 iso audit companies are there based in Australia?

RevenueBase identified 197 iso audit companies headquartered in Australia 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?

GQS, headquartered in Osborne Park, tops this list with the largest team on record.

Which city has the most iso audit companies?

Sydney leads with 25 headquartered companies, followed by Melbourne (22) and Brisbane (14).

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 542 verified decision-maker contacts tracked across these 197 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 20, 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.