Best Marketing Agencies in Buenos Aires (2026)

Introduction

Buenos Aires has a strong bench of full-funnel marketing agencies, and the nine below cover performance media, data and measurement, CRM and the large media networks. They were chosen for 2025 and 2026 recognition, the scale of their Buenos Aires teams and the range of work they take on.

The city works as a delivery hub as well as a local market. International performance and digital firms such as Brainlabs, DEPT and Monks run sizeable Buenos Aires teams that serve clients across Latin America and further afield. On the media side, Havas Media Network came first in Scopen’s Agency Scope Argentina 2025/26, presented in Buenos Aires in February 2026, and the networks reshuffled after Omnicom completed its acquisition of IPG at the end of 2025. Omnicom Media named new leaders in Argentina in April 2026, and in August 2026 it merged Hearts & Science and Mediahub into a new global agency, Hearts United.

Every agency here has an active Buenos Aires office in 2026. The list runs in no fixed order of merit, since the right choice depends on your channels, budget and how much of the funnel you want one partner to run.

The best marketing agencies in Buenos Aires

1. Brainlabs

Management-owned, backed by Falfurrias Capital Partners · Palermo · brainlabsdigital.com

Brainlabs is a performance media agency founded in 2012 by Dan Gilbert, a former Google employee. It now has more than 1,000 staff across five continents and manages over $1.5 billion in media spend. Its Buenos Aires office sits in the HIT POLO building on Avenida Dorrego, and the agency runs an academy in the city that recruits graduates into a 24-month training programme.

Services cover paid search, paid social, programmatic and CTV, retail media, SEO and analytics, including attribution, incrementality testing and marketing mix modelling. A regional round-up of Latin American performance agencies published in August 2026 listed Brainlabs alongside offices in Mexico City and São Paulo.

2. DEPT

International digital network · Villa Crespo · dept.global

DEPT describes itself as a growth company working across marketing, technology and AI, with more than 4,000 people in over 30 locations. It was named a Leader in Gartner’s 2026 Magic Quadrant for Global Digital Marketing Agencies and Webby Agency of the Year in 2026, its fourth time. It is a certified B Corp.

The Buenos Aires office on Castillo, in Villa Crespo, is one of two in Argentina; the other is in Mar del Plata. Work spans brand and media, customer experience, commerce, and tech and data, with eBay among the named case studies and partnerships with Adobe, Google, Salesforce and Shopify.

3. Monks

S4 Capital · Buenos Aires · monks.com

Monks is the operating brand of Sir Martin Sorrell’s S4 Capital, combining media, data, content, platforms and AI services. Its Buenos Aires office is listed under Latin America, with 27 open roles listed on the Monks site in November 2026.

On the marketing side, recent output includes 2026 reports on answer-engine and generative search optimisation, and a marketing mix modelling meta-analysis run with TikTok. It suits brands that want media, data and production handled by one network.

4. Havas Media Network Argentina

Havas · Buenos Aires · havas.com

Havas Media Network has led the Argentine media market on several measures. It came first in Scopen’s Agency Scope Argentina 2025/26 on overall market perception and on every attribute surveyed, from planning and buying to data, analytics and digital capabilities. RECMA ranked it first in Argentina in December 2025, and COMVergence put it top for new business in the first half of 2025.

Its agencies include Arena Media, which Cencosud reappointed for traditional and digital media after more than twelve years together. María José Ezquerra is CEO of Havas Argentina.

5. OMD Argentina

Omnicom · Buenos Aires · omd.com

OMD is the lead media agency of Omnicom Media in Argentina. In April 2026 Juan Pablo Broens became CEO of OMD Argentina, moving from ZetaBé, the bespoke unit Omnicom Media built for Mercado Libre. Guido Tucci became COO of Omnicom Media in Argentina, overseeing strategy and planning, data, tech and analytics, digital and growth.

The leadership change followed Omnicom’s acquisition of IPG, which brought further media agencies into the group. Fernando Capalbo is president of Omnicom Media in Argentina.

6. UM Argentina

Omnicom Media · Buenos Aires · umww.com

UM is a global media agency network that came to Omnicom with IPG’s media business. The Argentine office is led by managing director Gabriela Venczel. In August 2026 more than 25 of its staff spent the network’s Global Impact Day repairing the Ayudacan animal shelter in Palermo.

UM handles media planning and buying for large advertisers. Since the IPG deal it sits beside OMD inside Omnicom Media, so ask how teams and tools are shared between the two.

7. dentsu Media Argentina

dentsu · Buenos Aires · dentsu.com

dentsu’s Argentine media offer brings together Carat, iProspect and dentsu X. In the Agency Scope Argentina 2025/26 study, dentsu Media ranked first among media agency groups in the opinion of agency professionals. Carat was named the media agency with the most satisfied clients, the most recommended in the market and the one with the greatest impact on clients’ business growth.

iProspect is dentsu’s performance specialist and runs in Argentina as part of this offer. Guido Righetti leads the media service line locally.

8. WPP Media Argentina

WPP · Buenos Aires · wppmedia.com

WPP Media is WPP’s media operating unit, bringing together Mindshare, Wavemaker, EssenceMediacom, the data business Choreograph and The Goat Agency. It is hiring in Buenos Aires in 2026, with teams working from the office about four days a week.

It suits advertisers already aligned with WPP globally who want media, data and partnerships under one contract. Ask which of the agency brands will lead your account locally.

9. RAPP Buenos Aires

Omnicom · Belgrano · rapp.com

RAPP is Omnicom’s data-driven customer relationship agency, working on CRM, loyalty and personalised communications. Its Buenos Aires office is on Miñones, in Belgrano.

It is a good fit for banks, retailers and telecoms that hold large customer databases and want lifecycle and direct channels run with the same care as paid media.

What to look for in a Buenos Aires marketing agency

Start with where the work is done. Many firms in the city serve clients across Latin America, the US and Europe from Buenos Aires, so the team you meet may also be working on accounts in other time zones. That brings senior skills at good value, and it is worth asking how much of their week your account will get.

Ask what the agency measures and how. Performance shops such as Brainlabs talk in terms of incrementality and marketing mix modelling; media networks lean on their own data platforms. Agree the measure of success, and who owns the data and the ad accounts, before the first campaign goes live.

Check the effect of the 2025 and 2026 network changes. Omnicom’s acquisition of IPG moved UM into Omnicom Media alongside OMD, and WPP folded its media agencies into WPP Media. Ask which brand, team and contract will serve you in practice, and whether that is likely to change.

Look at how campaign assets and reporting are handled day to day. Full-funnel work produces a lot of material: briefs, creative variants for each channel, landing pages, dashboards and monthly reports. Agencies with one place where clients find the latest version, and a clear way to review and sign it off, are easier to work with across a long retainer.

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Frequently asked questions

What is the best marketing agency in Buenos Aires?

It depends on the channels and scale you need. On 2025 and 2026 recognition, Havas Media Network came first in Agency Scope Argentina 2025/26 and in RECMA’s Argentine ranking, Carat led on client satisfaction in the same study, and DEPT was named a Gartner Magic Quadrant Leader for 2026.

Which agencies in Buenos Aires specialise in performance marketing?

Brainlabs, DEPT and Monks run large Buenos Aires teams focused on paid media, data and measurement. Within the networks, iProspect is dentsu’s performance agency and is part of its Argentine media offer.

What happened to IPG’s media agencies in Argentina?

Omnicom completed its acquisition of IPG at the end of 2025, and UM now sits within Omnicom Media alongside OMD. Omnicom Media appointed new Argentine leaders in April 2026, including a new CEO for OMD.

Should I use a marketing agency or a creative agency?

A marketing agency fits when the brief is about reach, conversion and measurement across channels. If the main need is a campaign idea or brand platform, start with the best creative agencies in Buenos Aires, and bring a media or performance partner in alongside.

Do Buenos Aires agencies work with clients outside Argentina?

Yes. Several of the firms here are international networks whose Buenos Aires teams work on regional and global accounts. Brainlabs trains graduates for its international business through its Buenos Aires academy, and DEPT runs two Argentine offices within a network of more than 30.

Related lists

Marketing agencies in other cities: New York · London · Mexico City · São Paulo · Madrid

More in Buenos Aires: Creative agencies · Advertising agencies · Content studios · Branding agencies · UX design agencies

Run your agency on Fabric: Fabric for agencies · Best client portal tools · How to manage multiple clients