Company lists · Data verified August 2026

Top 25 Advertising agencies based in Sydney, Australia

Name: Advertising agencies based in Sydney, Australia
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Verified Aug 28, 2026 448 companies tracked

There are 448 advertising agencies headquartered in Sydney, Australia (RevenueBase, August 2026). RevenueBase tracks 6,195 professional contacts across them, including 1,517 with verified work emails and 525 with mobile numbers. Sydney is the largest hub.

This list covers advertising agencies headquartered in Sydney, 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.

448Companies

6,195Contacts tracked

1,517Verified emails

525Mobile numbers

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The 25 largest advertising agencies based in Sydney, Australia

Ranked by team size

Top 25 of 448 advertising agencies based in Sydney, 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	IVE Group	Sydney	1,001-5,000	878	532
2	Jimjam Ideas	Sydney	n/a	621	3
3	Wellcom Worldwide	Sydney	501-1,000	316	35
4	Essencemediacom Australia & NEW Zealand	Sydney	201-500	244	151
5	Creata	Sydney	51-200	177	64
6	Imsglobal	Sydney	51-200	119	61
7	Cheil Australia	Sydney	201-500	103	27
8	Mccorkell	Sydney	51-200	79	16
9	Thrive PR Communications	Sydney	51-200	74	40
10	HERO	Sydney	51-200	54	12
11	Mahlab	Sydney	51-200	49	24
12	FRUKT	Sydney	51-200	48	19
13	Defiant Digital	Sydney	11-50	40	15
14	ALT Shift	Sydney	11-50	38	20
15	The Speed Agency	Sydney	11-50	34	18
16	Affinity Group	Sydney	11-50	24	2
17	Madclarity	Sydney	11-50	16	10
18	Contentclicks	Sydney	11-50	16	3
19	Zentir	Sydney	11-50	15	12
20	Altair Media	Sydney	11-50	15	10
21	Leonards Advertising	Sydney	11-50	13	7
22	Pounce Agency	Sydney	11-50	13	1
23	Switch Digital	Sydney	11-50	10	2
24	Supermassive	Sydney	11-50	9	8
25	NOW Screen	Sydney	11-50	9	7

Showing 25 of 448 advertising agencies based in Sydney, Australia

See the full list, filter by size, metro and specialty, and get verified emails and direct dials for all 1,517 reachable decision-makers.

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Advertising agencies based in Sydney, Australia at a glance

As of Aug 28, 2026

1-10Median size (employees)

SydneyLargest hub · 448 HQs

525Contacts with mobile numbers

7Emails re-verified in last 30 days

Companies by employee count

1-10

318

11-50

107

51-200

201-500

501-1,000

1,001-5,000

Advertising agencies by metro in Australia

Metro	Companies
Advertising agencies in Sydney	448
Advertising agencies in Melbourne	338
Advertising agencies in Brisbane	136
Advertising agencies in Adelaide	88
Advertising agencies in Perth	72
Advertising agencies in Surry Hills	46
Advertising agencies in Gold Coast	41

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 “advertising agencies”, with match quality audited by blind human judging, and headquartered in Sydney, 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; 7 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 advertising agencies are there based in Sydney, Australia?

There are 448 advertising agencies headquartered in Sydney, Australia as of August 2026 (RevenueBase).

What is the largest company on this list?

IVE Group, headquartered in Sydney, tops this list with the largest team on record.

Which city has the most advertising agencies?

Sydney leads with 448 headquartered companies, followed by Melbourne (338) and Brisbane (136).

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 1,517 verified decision-maker contacts tracked across these 448 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.