Company lists · Data refreshed September 2026
Top 13 Multi-sector enterprises based in Australia
RevenueBase identified 56 multi-sector enterprises headquartered in Australia as of September 2026 and tracks 658 professional contacts across them, including 326 with verified work emails and 28 with mobile numbers. Sydney is the largest hub.
This list covers multi-sector enterprises 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 5, 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.
The 13 largest multi-sector enterprises based in Australia
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 436 | ||||
“BSA has evolved to become one of Australia’s leading technical services companies, providing rich and adapted solutions that are both flexible in delivery and a testament to many…” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 2 | 54 | ||||
“IMA Management & Technology is a privately owned Australian company renowned for delivering the highest quality IT and business management services and solutions for our blue-chip…” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 3 | Prostar ManagementIndirect evidence | 21 | |||
“ProStar Management is pioneering the way integrated management services are performed.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 4 | 14 | ||||
“It’s pretty simple: we help you shine.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 5 | H.U. GroupIndirect evidence | 5 | |||
“H.U.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 6 | Stretched Group PTY LTDIndirect evidence | 4 | |||
“The Stretched Group is an independently owned group of businesses based in Melbourne, Victoria, with subsidiaries based in Italy, Belgium and Singapore.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 7 | Network Communications Industries NCIIndirect evidence | 4 | |||
“NCI’s foundation was based on delivering Information Technology with a Strategic approach to business IT planning.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 8 | MagnapathIndirect evidence | 2 | |||
“Magnapath is a Management Consultancy which provides end to end business solutions and services for a large spectrum of clients through innovation, technology and collaboration.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 9 | 2 | ||||
“Carlton Group International is a dynamic, multi-sector enterprise committed to driving impactful investment and operational excellence across Real Estate, Corporate Consulting…” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 10 | MTS Consulting Group PTY LTDIndirect evidence | 2 | |||
“We at MTS specialise in assisting small to medium businesses in meeting the continuous changing environment that our clients face in making business and associated decisions.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 11 | KIKOIIndirect evidence | 1 | |||
“Our businesses, and the people who work within them, are characterised by their willingness to set off on new adventures, embracing the journey and being somewhat whimsical of the…” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 12 | 1 | ||||
“We do things differently at Elementary.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 13 | General Services Group AustraliaIndirect evidence | 1 | |||
“General Services Group serves as the dynamic corporate entity uniting several specialised companies, each bringing its unique expertise and capabilities to the table.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
Showing 13 of 56 multi-sector enterprises based in Australia
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Multi-sector enterprises based in Australia at a glance
As of Sep 5, 2026Companies by employee count
Verified emails by last verification
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 multi-sector enterprises, 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 “multi-sector enterprises”. 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 multi-sector enterprises, 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, 326 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 5, 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.
Frequently asked
How many multi-sector enterprises are there based in Australia?
RevenueBase identified 56 multi-sector enterprises 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?
BSA Limited, headquartered in Chatswood, tops this list with the largest team on record.
Which city has the most multi-sector enterprises?
Sydney leads with 12 headquartered companies, followed by Melbourne (8) and Perth (3).
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 326 verified decision-maker contacts tracked across these 56 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 5, 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.
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