Company lists · Data refreshed November 2026

Top 25 Advertising spend optimization consultants worldwide

Name: Advertising spend optimization consultants worldwide
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Nov 6, 2026 5,817 companies tracked

RevenueBase identified 5,817 company matches for advertising spend optimization consultants worldwide as of November 2026 and tracks 51,182 professional contacts across them, including 13,933 with verified work emails. The United States is the largest market and London the largest hub.

This list covers company matches for advertising spend optimization consultants worldwide, found by RevenueBase SmartSearch using the meaning of business descriptions in its company graph at Exact. Ranked by professionals tracked, largest first. Rows show recorded descriptions where available, Exact search membership and the snapshot date. Data refreshed November 6, 2026. Country and city lists for advertising spend optimization consultants follow the table.

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 RevenueBase SmartSearch · Exact Recorded Nov 6, 2026 How this list was built

5,817Companies

51,182Contacts tracked

13,933Verified emails

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The 25 largest advertising spend optimization consultants worldwide

Ranked by team size

Top 25 of 5,817 company matches for advertising spend optimization consultants worldwide, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Nov 6, 2026. The RevenueBase SmartSearch column shows Exact match membership in this saved search. Click a contact count to view that company's people. Totals use company locations recorded by RevenueBase; the displayed preview is a smaller selection.
#	Company	RevenueBase SmartSearch	Headquarters	Employees	Contacts
1	OTHER	Exact match	Toronto, FL, CanadaHQ recorded Nov 6, 2026	n/a	3,078 contacts →
	Exact match “Other.™ is a modern integrated media agency built for marketers who need more from their agency partner.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
2	Horizon Media	Exact match	New York, NY, United StatesHQ recorded Nov 6, 2026	1,001-5,000	2,506 contacts →
	Exact match “Horizon Media is a leader in driving business-based outcomes for marketers.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
3	Brainlabs	Exact match	New York, United StatesHQ recorded Nov 6, 2026	1,001-5,000	1,066 contacts →
	Exact match “Brainlabs is an independent, AI-native media agency built to grow client revenue and prove the impact of every dollar spent on media.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
4	Ebiquity PLC	Exact match	London, United KingdomHQ recorded Nov 6, 2026	501-1,000	651 contacts →
	Exact match “Ebiquity is the independent authority in Marketing Effectiveness.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
5	Active International	Exact match	Pearl River, NY, United StatesHQ recorded Nov 6, 2026	501-1,000	565 contacts →
	Exact match “Active International, the corporate trade leader for over four decades, enables companies to maximize the value they receive for assets, increase their return on ad spend, and…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
6	Icon International, INC	Exact match	Stamford, CT, United StatesHQ recorded Nov 6, 2026	201-500	516 contacts →
	Exact match “ICON International is the largest independent principal-based media buyer in the U.S, placing nearly $2 billion annually on behalf of its clients.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
7	HAUS	Exact match	San Francisco, CA, United StatesHQ recorded Nov 6, 2026	201-500	306 contacts →
	Exact match “Haus is the causal marketing platform top businesses trust to optimize billions in ad spend worldwide.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
8	OMD Media Direction	Exact match	Moscow, United StatesHQ recorded Nov 6, 2026	201-500	287 contacts →
	Exact match “OMD Media Direction offers a full range of media services.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
9	Havas Edge	Exact match	Carlsbad, NY, United StatesHQ recorded Nov 6, 2026	201-500	271 contacts →
	Exact match “Havas Edge is a leading TV advertising and performance media agency, combining the scale of the global Havas network with the agility of a boutique partner.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
10	EPA Digital	Exact match	Polanco, MexicoHQ recorded Nov 6, 2026	51-200	260 contacts →
	Exact match “We are a digital advertising agency specializing in Performance, Branding, Creativity and Consulting of CRO, Analytics and Google Ads.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
11	Onmedia	Exact match	West Des Moines, IA, United StatesHQ recorded Nov 6, 2026	51-200	227 contacts →
	Exact match “OnMedia utilizes the most advanced technology for targeted digital and TV advertising.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
12	Marketing Architects	Exact match	Founded In Minneapolis, United StatesHQ recorded Nov 6, 2026	51-200	212 contacts →
	Exact match “Marketing Architects is an All-Inclusive TV agency that helps brands get more out of TV advertising.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
13	Adlook	Exact match	Warsaw, PolandHQ recorded Nov 6, 2026	51-200	200 contacts →
	Exact match “Adlook is redefining how brands grow across the open web and Connected TV.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
14	Magna Global	Exact match	New York, NY, United StatesHQ recorded Nov 6, 2026	10001+	199 contacts →
	Exact match “MAGNA is the media intelligence unit within IPG Mediabrands and the driving force behind advertising forecasts, understanding consumer behavior, marketplace insights, and…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
15	Spark Foundry Australia	Exact match	Pyrmont, AustraliaHQ recorded Nov 6, 2026	201-500	191 contacts →
	Exact match “Spark Foundry Australia is a leading media agency within Publicis Groupe ANZ, with offices in Sydney and Melbourne and a team of 300+ good humans.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
16	ALL Response Media	Exact match	London, United KingdomHQ recorded Nov 6, 2026	51-200	186 contacts →
	Exact match “All Response Media is the leading performance media planning and buying agency.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
17	Heroiks	Exact match	Levallois-perret, FranceHQ recorded Nov 6, 2026	201-500	179 contacts →
	Exact match “Créé en 2005, Heroiks est l’un des principaux acteurs indépendants du conseil en stratégies de croissance et en activation média.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
18	UM Australia	Exact match	Sydney, AustraliaHQ recorded Nov 6, 2026	201-500	165 contacts →
	Exact match “Media was something people watched, listened to or read.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
19	Guideline	Exact match	New York, United StatesHQ recorded Nov 6, 2026	51-200	163 contacts →
	Exact match “Guideline is a global provider of ad intelligence and media plan management technology powering the strategy, planning, and management of advertising buying and selling for the…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
20	Datawrkz	Exact match	Austin, United StatesHQ recorded Nov 6, 2026	201-500	161 contacts →
	Exact match “Your time is yours again with our powerful digital advertising solutions.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
21	Adbuffs	Exact match	Kolkata, IndiaHQ recorded Nov 6, 2026	51-200	160 contacts →
	Exact match “We engineer Revenue for DTC brands Keen on partnering with us?” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
22	Pathlabs	Exact match	Missoula, MT, United StatesHQ recorded Nov 6, 2026	51-200	158 contacts →
	Exact match “We are an end-to-end Media Execution Partner (MEP) built for independent agencies.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
23	Delve Deeper	Exact match	Boulder, United StatesHQ recorded Nov 6, 2026	51-200	146 contacts →
	Exact match “Delve Deeper is an independent performance media agency on a mission to create exceptional value for brands through our innovative approach to applying technology and data in…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
24	Novus Media LLC	Exact match	Chicago, IL, United StatesHQ recorded Nov 6, 2026	51-200	139 contacts →
	Exact match “Architects of Growth; Optimizers of Outcomes.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
25	Manifiesto	Exact match	Madrid, SpainHQ recorded Nov 6, 2026	51-200	139 contacts →
	Exact match “Manifiesto is an advertising agency based in Barcelona and Madrid and with 10 years of experience in the sector.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase

RevenueBase SmartSearch

Describe a niche business in your own words. RevenueBase SmartSearch compares the meaning of your description with company business descriptions compiled in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit.

This list uses Exact for “advertising spend optimization consultants”. Each Exact match badge shows membership in that saved search; it is not an individual similarity score or a service-quality rating. Recorded descriptions are shown where available.

Showing 25 of 5,817 advertising spend optimization consultants worldwide

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Advertising spend optimization consultants worldwide at a glance

As of Nov 6, 2026

27.2%Verified-email coverage

8.8Average contacts per company

1-10Median size (employees)

3.1%Largest-city concentration · London

Nov 6, 2026Page data refreshed

Companies by employee count

1-10

4,043

11-50

1,393

51-200

287

201-500

501-1,000

1,001-5,000

5,001-10,000

10001+

Email recency is reported on each country list linked below.

How this list was built

The recorded descriptions help you assess these company matches. Check a company’s website for its current services and locations.

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.
Coverage: Every country. Country and city lists for advertising spend optimization consultants are linked below.
What qualifies: Company records worldwide whose business descriptions match “advertising spend optimization consultants” by meaning at the Exact setting. Descriptions are compiled in the RevenueBase company graph from public websites, profiles and company information where available; they are not guaranteed quotations from the company's website.
RevenueBase SmartSearch: Describe a niche company in your own words to find businesses by meaning. Exact, Similar, Related and Broad control the breadth of RevenueBase SmartSearch. This saved list uses Exact. Each row's Exact match badge shows inclusion in that search, not an individual score or a service-quality judgment.
Public preview: The public preview omits records without a verified work email. Dataset totals and geographic summaries describe the full matched records before these preview filters.
Match quality: RevenueBase's August 25, 2026 study assessed 4,198 description/company pairs across matching settings. The publisher reports 86% good or better at Exact. This evaluates the method across queries; it does not audit this individual list. Recorded company descriptions, where available, help you judge each match yourself. Read the full methodology: how the lists are built and what the study measures.
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 displayed company carries at least one verified work email. RevenueBase tracks 13,933 professional contacts with verified work emails across the full matched dataset. 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 November 6, 2026. Lists refresh periodically as the graph is re-checked.
Record context: Company records and descriptions can change. Check the company's website for its current services and locations.

Advertising spend optimization consultants by location

43 lists · largest first

Every Advertising spend optimization consultants list RevenueBase publishes, by country and city. Counts are matching companies in each list as of its own refresh date.

Countries

Cities

Frequently asked

What is RevenueBase SmartSearch?

RevenueBase SmartSearch finds niche companies by the meaning of their business descriptions in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit your description. This list uses Exact for “advertising spend optimization consultants”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many advertising spend optimization consultants are there worldwide?

RevenueBase identified 5,817 company matches for advertising spend optimization consultants worldwide as of November 2026, using the meaning of business descriptions at Exact. This is the recorded matched set in the RevenueBase company graph.

What is the largest company on this list?

OTHER tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.

Which country has the most advertising spend optimization consultants?

The United States leads with 1,387 companies, followed by the United Kingdom (373) and India (317). Every advertising spend optimization consultants list by country and city is linked on this page.

Which city has the most advertising spend optimization consultants?

London leads with 179 company records, followed by New York (117) and Paris (58).

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work limited free results with 500 credits to start. Upgrading provides access to the 13,933 professional contacts with verified work emails tracked across these 5,817 companies; direct dials are available where recorded.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on November 6, 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.