Company lists · Data verified August 2026

Top 25 Business consulting firms based in Australia

Name: Business consulting firms based in Australia
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Verified Aug 28, 2026 4,239 companies tracked

There are 4,239 business consulting firms headquartered in Australia (RevenueBase, August 2026). RevenueBase tracks 40,513 professional contacts across them, including 17,645 with verified work emails and 4,939 with mobile numbers. Sydney is the largest hub.

This list covers business consulting firms headquartered in Australia, matched on what each company actually does as described in its own words. Ranked by team size, largest first. Data current as of August 28, 2026.

4,239Companies

40,513Contacts tracked

17,645Verified emails

4,939Mobile numbers

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The 25 largest business consulting firms based in Australia

Ranked by team size

Top 25 of 4,239 business consulting firms based in Australia, ranked by team size, largest first. Data verified Aug 28, 2026. Click a count to unlock that company's people.
#	Company	HQ	Employees	Contacts	Verified emails
1	Nihilent	South Melbourne	1,001-5,000	1,722	575
2	Nous Group	Brisbane	501-1,000	697	531
3	Kordamentha	Townsville	501-1,000	601	402
4	Mcgrathnicol	Sydney	201-500	509	409
5	Partners In Performance, Part Of Accenture	Brisbane	501-1,000	484	244
6	Synergy Group	Barton	201-500	421	249
7	Clearsulting	Sydney	201-500	364	250
8	Delivery Associates	Sydney	51-200	356	166
9	Bluerock	Melbourne	201-500	316	205
10	Davidson	Symonston	501-1,000	300	138
11	Finity	Melbourne	201-500	253	214
12	Terra Firma Business Consulting	Melbourne	201-500	232	92
13	PMY Group	Melbourne	201-500	197	97
14	Protiviti Australia	Sydney	5,001-10,000	172	39
15	Programmed Professionals	Sydney	51-200	172	26
16	Fiftyfive5, Part Of Accenture Song	Sydney	201-500	170	106
17	Systemsgo	Sydney	51-200	112	49
18	Bendelta	Brisbane City	51-200	111	88
19	Projects Assured	Braddon	51-200	111	69
20	Sensei	Brisbane City	51-200	95	72
21	Parbery	Fyshwick	51-200	76	58
22	Proximity	Canberra	51-200	75	63
23	Collabgenics	Arana Hills	501-1,000	71	1
24	Maximus International	Melbourne	51-200	70	29
25	PPB Advisory	Perth	201-500	70	23

Showing 25 of 4,239 business consulting firms based in Australia

See the full list, filter by size, metro and specialty, and get verified emails and direct dials for all 17,645 reachable decision-makers.

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Business consulting firms based in Australia at a glance

As of Aug 28, 2026

1-10Median size (employees)

SydneyLargest hub · 926 HQs

4,939Contacts with mobile numbers

104Emails re-verified in last 30 days

Companies by employee count

1-10

3,482

11-50

607

51-200

201-500

501-1,000

1,001-5,000

5,001-10,000

Business consulting firms by metro

Metro	Companies
Business consulting firms in Sydney	926
Business consulting firms in Melbourne	801
Business consulting firms in Brisbane	423
Business consulting firms in Perth	253
Business consulting firms in Adelaide	140
Business consulting firms in Canberra	71
Business consulting firms in Brisbane City	54

How this list was built

Source: The RevenueBase company graph: 21.3 million companies and 398.9 million professional contacts resolved from primary sources.
Inclusion: Companies whose own business descriptions match “business consulting firms”, with match quality audited by blind human judging, and headquartered in Australia.
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: Contact records re-verify on a rolling cadence; 104 contacts on this list were re-verified in the last 30 days.
Refresh: Lists are refreshed periodically as the underlying company graph is re-verified. Last verified Aug 28, 2026.

Frequently asked

How many business consulting firms are there based in Australia?

There are 4,239 business consulting firms headquartered in Australia as of August 2026 (RevenueBase).

What is the largest company on this list?

Nihilent, headquartered in South Melbourne, tops this list with the largest team on record.

Which city has the most business consulting firms?

Sydney leads with 926 headquartered companies, followed by Melbourne (801) and Brisbane (423).

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 17,645 verified decision-maker contacts tracked across these 4,239 companies.

How current is this list?

The list is refreshed periodically as the underlying company graph is re-verified. It was last verified on August 28, 2026.

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About this data

RevenueBase is a B2B contact data platform. Its company graph covers 21.3 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, the same data that powers RevenueBase's B2B data products and the free research portal.