Company lists · Data refreshed September 2026

Top 21 IT consulting services based in Australia

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

Compiled by the RevenueBase Data Team Data refreshed Sep 4, 2026 3,239 companies tracked

RevenueBase identified 3,239 IT consulting services headquartered in Australia as of September 2026 and tracks 34,076 professional contacts across them, including 12,114 with verified work emails and 2,168 with mobile numbers. Sydney is the largest hub.

This list covers IT consulting services 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, how directly it supports the match, and when it was last checked. Data refreshed September 4, 2026.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase SmartSearch, 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 Match evidence on every row Refreshed Sep 4, 2026 86% judged on-target in blind review

3,239Companies

34,076Contacts tracked

12,114Verified emails

2,168Mobile numbers

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The 21 largest IT consulting services based in Australia

Ranked by team size

Top 21 of 3,239 IT consulting services based in Australia, ranked by team size, largest first. Data refreshed Sep 4, 2026. Evidence rates how directly each company's own description names IT consulting services: strong (names it), partial (names part of it), indirect (matched on its full profile rather than the summary shown). Click a count to unlock that company's people.
#	Company	Headquarters	Employees	Contacts
1	Accenture AustraliaIndirect evidence	Melbourne Vic, AustraliaHQ checked Sep 4, 2026	10001+	2,164
	“Accenture is a leading global professional services company that helps the world’s leading businesses, governments and other organisations build their digital core, optimise their…” Source: company website · checked Sep 4, 2026
2	AtturraPartial evidence	Sydney, AustraliaHQ checked Sep 4, 2026	1,001-5,000	794
	“Atturra (ASX: ATA) is one of Australia's leading advisory and IT solutions providers, focused on providing end-to-end transformation services to its clients.” Source: company website · checked Sep 4, 2026
3	NCS Group AustraliaIndirect evidence	Sydney, AustraliaHQ checked Sep 4, 2026	1,001-5,000	794
	“NCS in Australia is reinventing technology services from the inside out.” Source: company website · checked Sep 4, 2026
4	Nexon Asia PacificPartial evidence	Sydney, AustraliaHQ checked Sep 4, 2026	501-1,000	771
	“Nexon Asia Pacific (Nexon) is an award-winning digital consulting and managed services partner for mid-market, enterprise, and government organisations across Australia.” Source: company website · checked Sep 4, 2026
5	NRI Australia & NEW ZealandPartial evidence	Sydney, AustraliaHQ checked Sep 4, 2026	1,001-5,000	723
	“As a trusted end-to-end digital partner, we design, build, and manage IT solutions that turn bold visions into reality and set new standards of excellence for our clients.” Source: company website · checked Sep 4, 2026
6	DWSPartial evidence	Melbourne, AustraliaHQ checked Sep 4, 2026	201-500	392
	“Since 1991, DWS has been helping organisations across Australia reimagine what’s possible through technology, business, and management consulting.” Source: company website · checked Sep 4, 2026
7	Ac3Indirect evidence	Haymarket, AustraliaHQ checked Sep 4, 2026	201-500	371
	“AC3 is a leading Australian-owned and operated technology services provider helping organisations across government, healthcare, financial services, and critical infrastructure…” Source: company website · checked Sep 4, 2026
8	DXC TechnologyIndirect evidence	Macquarie Park, AustraliaHQ checked Sep 4, 2026	10001+	359
	“DXC Technology (NYSE: DXC) is a leading enterprise technology and innovation partner delivering software, services, and solutions to global enterprises and public sector…” Source: company website · checked Sep 4, 2026
9	FinityIndirect evidence	The Rocks, AustraliaHQ checked Sep 4, 2026	201-500	253
	“We are a trusted partner of tech start-ups through to large scale organisations.” Source: company website · checked Sep 4, 2026
10	Terra Firma Business ConsultingIndirect evidence	Melbourne, AustraliaHQ checked Sep 4, 2026	201-500	232
	“At Terra Firma, we understand that success is all about sustaining long-term relationships.” Source: company website · checked Sep 4, 2026
11	UNICOIndirect evidence	Melbourne, AustraliaHQ checked Sep 4, 2026	51-200	213
	“Unico is an Australian privately owned and operated technology services company making technology innovation simple.” Source: company website · checked Sep 4, 2026
12	PMY GroupIndirect evidence	Melbourne, AustraliaHQ checked Sep 4, 2026	201-500	197
	“At PMY Group, we are proud of our Australian origins and ever-increasing global footprint.” Source: company website · checked Sep 4, 2026
13	Seisma GroupIndirect evidence	Melbourne, AustraliaHQ checked Sep 4, 2026	501-1,000	182
	“Together, we are unstoppable.” Source: company website · checked Sep 4, 2026
14	Tecala GroupIndirect evidence	Sydney, AustraliaHQ checked Sep 4, 2026	201-500	179
	“Tecala is an award-winning Australian technology partner, helping mid-market organisations navigate complexity and accelerate transformation with confidence.” Source: company website · checked Sep 4, 2026
15	Barhead, An Akkodis CompanyPartial evidence	Sydney, AustraliaHQ checked Sep 4, 2026	10001+	177
	“Barhead, an Akkodis company, is an award-winning consulting firm focused on leveraging Microsoft’s Technology Stack to deliver business solutions.” Source: company website · checked Sep 4, 2026
16	Intuit TechnologiesPartial evidence	Hobart, AustraliaHQ checked Sep 4, 2026	51-200	172
	“Intuit Technologies is a Tasmanian-owned national IT services provider, with offices across Tasmania, Victoria, and Queensland.” Source: company website · checked Sep 4, 2026
17	Protiviti AustraliaPartial evidence	Melbourne, AustraliaHQ checked Sep 4, 2026	5,001-10,000	172
	“Protiviti is a global business consulting firm that delivers deep expertise, objective insights, a tailored approach and unparalleled collaboration to help leaders confidently…” Source: company website · checked Sep 4, 2026
18	Ongc SystemsPartial evidence	Arundel, AustraliaHQ checked Sep 4, 2026	n/a	167
	“ONGC Systems provides businesses with comprehensive IT services, that automate and streamline operations, reduce risk and increase stability while lowering the cost of system…” Source: company website · checked Sep 4, 2026
19	Sice ANZIndirect evidence	South Yarra, AustraliaHQ checked Sep 4, 2026	201-500	163
	“SICE is a leading multinational company that integrates technologies for public infrastructure management.” Source: company website · checked Sep 4, 2026
20	Cube NetworksIndirect evidence	Southbank, AustraliaHQ checked Sep 4, 2026	51-200	156
	“Cube Networks are experts in Digital Infrastructure with strong foundations in Networks and Security, who pride ourselves on simplified solutions for complex, large-scale…” Source: company website · checked Sep 4, 2026
21	Blue Connections ITPartial evidence	Scoresby, AustraliaHQ checked Sep 4, 2026	51-200	146
	“Blue Connections IT is a leading Australian-owned provider of best-in-class IT solutions and managed services.” Source: company website · checked Sep 4, 2026

Showing 21 of 3,239 IT consulting services based in Australia

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IT consulting services based in Australia at a glance

As of Sep 4, 2026

1-10Median size (employees)

SydneyLargest hub · 634 HQs

2,168Contacts with mobile numbers

Sep 4, 2026Data refreshed

Companies by employee count

1-10

2,028

11-50

894

51-200

219

201-500

501-1,000

1,001-5,000

5,001-10,000

10001+

Verified emails by last verification

0–30

31–60

968

61–90

6,782

90–180

4,284

180+

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 IT consulting services, so some rows will be adjacent to the category rather than pure plays. The description and evidence 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 SmartSearch, the natural-language company search available to every RevenueBase user.
What qualifies: Companies headquartered in Australia whose own description of what they do matches “IT consulting services”. Matching reads each company's description, not its industry code or its name.
What we exclude: Companies whose own description does not clearly place them among IT consulting services, 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 an evidence 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, 12,114 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 4, 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.

IT consulting services by metro

Frequently asked

How many IT consulting services are there based in Australia?

RevenueBase identified 3,239 IT consulting services 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?

Accenture Australia, headquartered in Sydney, tops this list with the largest team on record.

Which city has the most IT consulting services?

Sydney leads with 634 headquartered companies, followed by Melbourne (597) and Brisbane (208).

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 12,114 verified decision-maker contacts tracked across these 3,239 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 4, 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 SmartSearch, 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.