Company lists · Data refreshed September 2026

Top 25 Internal communication agencies based in Australia

Name: Internal communication agencies based in Australia
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 20, 2026 249 companies tracked

RevenueBase identified 249 internal communication agencies headquartered in Australia as of September 2026 and tracks 4,391 professional contacts across them, including 1,339 with verified work emails. Sydney is the largest hub.

This list covers internal communication agencies 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

249Companies

4,391Contacts tracked

1,339Verified emails

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The 25 largest internal communication agencies based in Australia

Ranked by team size

Top 25 of 249 internal communication agencies 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 internal communication agencies: 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	Jimjam Ideas	Partial evidence	Sydney, AustraliaHQ checked Sep 20, 2026	n/a	621 contacts →
	Partial evidence “JIMJAM Ideas is an award winning integrated communications agency that believes CONNECTED IDEAS to be the key to powerful and transformative marketing.” Source: RevenueBase Database · checked Sep 20, 2026
2	OMD Australia	Partial evidence	South Eveleigh, AustraliaHQ checked Sep 20, 2026	501-1,000	523 contacts →
	Partial evidence “OMD Australia is proud to be part of the OMD global network, the world's largest leading marketing and communications agency.” Source: RevenueBase Database · checked Sep 20, 2026
3	SBM Marketing Communications	Partial evidence	Silverwater, AustraliaHQ checked Sep 20, 2026	51-200	147 contacts →
	Partial evidence “At SBM, we understand the power of marketing and effective communications.” Source: RevenueBase Database · checked Sep 20, 2026
4	Think HQ	Partial evidence	South Melbourne, AustraliaHQ checked Sep 20, 2026	51-200	108 contacts →
	Partial evidence “Jen Sharpe founded Think HQ in 2010, on the belief that communications can be harnessed as a force of positive impact.” Source: RevenueBase Database · checked Sep 20, 2026
5	EVH	Partial evidence	Darlinghurst, AustraliaHQ checked Sep 20, 2026	11-50	83 contacts →
	Partial evidence “Creative communications for established and emerging luxury, lifestyle, design, fashion and wellness brands An independent agency founded and based in Sydney with operations in…” Source: RevenueBase Database · checked Sep 20, 2026
6	UMM	Indirect evidence	Sydney, AustraliaHQ checked Sep 20, 2026	11-50	71 contacts →
	Indirect evidence “UMM crafts brand stories to motivate action.” Source: RevenueBase Database · checked Sep 20, 2026
7	Icon Agency	Partial evidence	Cremorne, AustraliaHQ checked Sep 20, 2026	51-200	62 contacts →
	Partial evidence “ICON is a full-service, award-winning creative communications agency inspired by independent thinking, guided by an interdisciplinary approach.” Source: RevenueBase Database · checked Sep 20, 2026
8	Cassette	Partial evidence	Cremorne, AustraliaHQ checked Sep 20, 2026	11-50	61 contacts →
	Partial evidence “At Cassette, creativity intersects with communications strategy, and integrated campaigns are delivered via memorable and compelling content.” Source: RevenueBase Database · checked Sep 20, 2026
9	Purple	Partial evidence	Perth, AustraliaHQ checked Sep 20, 2026	11-50	54 contacts →
	Partial evidence “Purple is one of Australia’s leading marketing and communications agencies – using insight, impact, influence and innovation to drive positive change for our clients, our people…” Source: RevenueBase Database · checked Sep 20, 2026
10	Mahlab	Partial evidence	Sydney, AustraliaHQ checked Sep 20, 2026	51-200	49 contacts →
	Partial evidence “Mahlab is a business communications house headquartered in Asia Pacific, with almost 30 years’ experience in telling complex stories that create real and positive impact for…” Source: RevenueBase Database · checked Sep 20, 2026
11	Dentsu QLD	Partial evidence	Brisbane, AustraliaHQ checked Sep 20, 2026	51-200	42 contacts →
	Partial evidence “dentsu Qld is a leading marketing and communications specialist agency known for delivering best-in-class integrated services and solutions in media, CXM, creative and public…” Source: RevenueBase Database · checked Sep 20, 2026
12	Rapid Media	Partial evidence	Newstead, AustraliaHQ checked Sep 20, 2026	11-50	42 contacts →
	Partial evidence “Rapid Media is a full-service communications agency offering media, digital and creative solutions to clients across a range of industries including retail, FMCG and e-commerce to…” Source: RevenueBase Database · checked Sep 20, 2026
13	Honner	Partial evidence	Sydney, AustraliaHQ checked Sep 20, 2026	11-50	36 contacts →
	Partial evidence “Honner, A FINN Partners Company is a specialist communications consultancy for the financial and corporate sectors across Australia and the Asia-Pacific.” Source: RevenueBase Database · checked Sep 20, 2026
14	Sefiani, Part Of Clarity Global	Partial evidence	Sydney, AustraliaHQ checked Sep 20, 2026	11-50	35 contacts →
	Partial evidence “Sefiani is a leading Australian communications agency that has built, enhanced and protected corporate and brand reputations over two decades.” Source: RevenueBase Database · checked Sep 20, 2026
15	BBS Communications Group	Partial evidence	Brisbane, AustraliaHQ checked Sep 20, 2026	11-50	33 contacts →
	Partial evidence “BBS Communications Group is one of Australia’s most respected strategic communications agencies.” Source: RevenueBase Database · checked Sep 20, 2026
16	Equality Media Marketing	Indirect evidence	Richmond, AustraliaHQ checked Sep 20, 2026	11-50	32 contacts →
	Indirect evidence “We are an independent, people-first agency that aims to do things differently.” Source: RevenueBase Database · checked Sep 20, 2026
17	GDJ Advertising	Partial evidence	North Melbourne, AustraliaHQ checked Sep 20, 2026	n/a	32 contacts →
	Partial evidence “After a marketing partner who can listen, plan, create, craft and execute with you to achieve your communications goals in 2024?” Source: RevenueBase Database · checked Sep 20, 2026
18	Essential	Partial evidence	Sydney, AustraliaHQ checked Sep 20, 2026	11-50	30 contacts →
	Partial evidence “Essential is a strategic communications agency working primarily with member and not-for-profit organisations.” Source: RevenueBase Database · checked Sep 20, 2026
19	SABIO	Indirect evidence	Brisbane, AustraliaHQ checked Sep 20, 2026	11-50	30 contacts →
	Indirect evidence “At Sabio, we create success for our clients by elevating the everyday, into the unexpected.” Source: RevenueBase Database · checked Sep 20, 2026
20	Savi Communications	Partial evidence	South Melbourne, AustraliaHQ checked Sep 20, 2026	11-50	28 contacts →
	Partial evidence “Savi is an award winning full service marketing and communications agency that combines purpose, creativity, and insight driven strategy to shape and communicate client vision.” Source: RevenueBase Database · checked Sep 20, 2026
21	The Creative Works - Australia	Partial evidence	Melbourne, AustraliaHQ checked Sep 20, 2026	11-50	28 contacts →
	Partial evidence “The Creative Works is an independent advertising, design and digital agency that solves communications problems and delivers real results for brands who want to make a positive…” Source: RevenueBase Database · checked Sep 20, 2026
22	Weber Shandwick Australia	Partial evidence	Sydney, AustraliaHQ checked Sep 20, 2026	51-200	26 contacts →
	Partial evidence “Weber Shandwick is a global in-culture communications agency built to make brave ideas connect with people.” Source: RevenueBase Database · checked Sep 20, 2026
23	Cultural Perspectives	Partial evidence	Redfern, AustraliaHQ checked Sep 20, 2026	11-50	25 contacts →
	Partial evidence “Cultural Perspectives is an award-winning multicultural communications agency with a strong reputation for delivering high-impact communication campaigns for culturally and…” Source: RevenueBase Database · checked Sep 20, 2026
24	RED Jelly Australia	Indirect evidence	Hobart, AustraliaHQ checked Sep 20, 2026	11-50	25 contacts →
	Indirect evidence “We.” Source: RevenueBase Database · checked Sep 20, 2026
25	Primary Comms Group	Partial evidence	Surry Hills, AustraliaHQ checked Sep 20, 2026	11-50	24 contacts →
	Partial evidence “Three specialist communication agencies working under one roof.” 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: internal communication agencies. 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 internal communication agencies.
Partial evidence: Its own public description names part of internal communication agencies, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name internal communication agencies. 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 25 of 249 internal communication agencies based in Australia

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Internal communication agencies based in Australia at a glance

As of Sep 20, 2026

30.5%Verified-email coverage

17.6Average contacts per company

1-10Median size (employees)

19.7%Largest-city concentration · Sydney

Sep 20, 2026Page data refreshed

Companies by employee count

1-10

164

11-50

51-200

201-500

501-1,000

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 249 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 internal communication agencies, 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 “internal communication agencies”. 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 internal communication agencies), 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 internal communication agencies, 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, 1,339 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.

Internal communication agencies by metro

Internal communication agencies in Sydney49

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 internal communication agencies, 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 internal communication agencies are there based in Australia?

RevenueBase identified 249 internal communication agencies 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?

Jimjam Ideas, headquartered in Sydney, tops this list with the largest team on record.

Which city has the most internal communication agencies?

Sydney leads with 49 headquartered companies, followed by Melbourne (24) and Brisbane (21).

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 1,339 verified decision-maker contacts tracked across these 249 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.