Company lists · Data verified August 2026

Top 25 Business strategy consulting firms based in Australia

Name: Business strategy 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 2,467 companies tracked

There are 2,467 business strategy consulting firms headquartered in Australia (RevenueBase, August 2026). RevenueBase tracks 23,921 professional contacts across them, including 10,320 with verified work emails and 3,370 with mobile numbers. Sydney is the largest hub.

This list covers business strategy 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.

2,467Companies

23,921Contacts tracked

10,320Verified emails

3,370Mobile numbers

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The 25 largest business strategy consulting firms based in Australia

Ranked by team size

Top 25 of 2,467 business strategy 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	Ey-Parthenon	Sydney	10001+	16,982	8,009
2	Fiftyfive5, Part Of Accenture Song	Sydney	201-500	170	106
3	Rennie	Sydney	51-200	78	66
4	SPP	Sydney	51-200	50	22
5	Ngamuru Advisory	Fyshwick	51-200	46	32
6	Maxim Business Advisors	Newcastle	51-200	37	32
7	Vertex Consulting & Compliance Group	Melbourne	51-200	36	16
8	Noetic	Canberra	51-200	35	16
9	Nine Advisory	Barangaroo	11-50	33	7
10	Insight Advisory Group	West Leederville	11-50	24	19
11	Tiger & Bear Partners	Sydney	11-50	21	15
12	Oc&c Strategy Consultants Australia	Melbourne	501-1,000	21	13
13	Ariston Partners	Chatswood	51-200	21	6
14	Castalia Group	Burwood	1,001-5,000	20	13
15	The TAX Factor	Parramatta	11-50	20	7
16	Corporality	Sydney	11-50	20	4
17	Litmus Group	Brisbane	201-500	18	2
18	Wdscott, LTD	North Sydney	11-50	16	1
19	Resonate	Sydney	11-50	15	8
20	Jayb Enterprises	Sydney	11-50	14	13
21	Business Benchmark Group	Launceston	11-50	14	10
22	Powell Enterprises	Tuggerah	11-50	13	7
23	Grow Advisory Group	Tweed Heads South	11-50	12	10
24	Indian Ocean Group	Subiaco	11-50	10	3
25	Devenny Payne	Bacchus Marsh	11-50	9	6

Showing 25 of 2,467 business strategy consulting firms based in Australia

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Business strategy consulting firms based in Australia at a glance

As of Aug 28, 2026

1-10Median size (employees)

SydneyLargest hub · 562 HQs

3,370Contacts with mobile numbers

53Emails re-verified in last 30 days

Companies by employee count

1-10

2,171

11-50

256

51-200

201-500

501-1,000

1,001-5,000

10001+

Business strategy consulting firms by metro

Metro	Companies
Business strategy consulting firms in Sydney	562
Business strategy consulting firms in Melbourne	461
Business strategy consulting firms in Brisbane	231
Business strategy consulting firms in Perth	139
Business strategy consulting firms in Adelaide	92
Business strategy consulting firms in Gold Coast	34
Business strategy consulting firms in Brisbane City	28

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 strategy 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; 53 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 strategy consulting firms are there based in Australia?

There are 2,467 business strategy consulting firms headquartered in Australia as of August 2026 (RevenueBase).

What is the largest company on this list?

Ey-Parthenon, headquartered in Sydney, tops this list with the largest team on record.

Which city has the most business strategy consulting firms?

Sydney leads with 562 headquartered companies, followed by Melbourne (461) and Brisbane (231).

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 10,320 verified decision-maker contacts tracked across these 2,467 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.