Best Marketing Agencies in Paris (2026)

Introduction

Paris has one of Europe’s strongest benches of marketing agencies, and the 11 below cover the full funnel: data and AI consultancies, search and paid media specialists, growth agencies for e-commerce and SaaS, and integrated groups. Each was chosen for its current client roster, its 2025 and 2026 work, and a verified office in Paris or the inner suburbs.

The city’s marketing scene grew up around data. Artefact, fifty-five and Converteo all started in Paris and now advise luxury, retail and banking clients on measurement, customer data and AI, alongside media work. The search and performance side has been busy too. Labelium Group renamed itself Cosmo5 in October 2025, Eskimoz was named best European search agency at the 2026 European Search Awards, and several agencies have added GEO (optimisation for AI search engines) to their SEO offer over the past year.

Every agency here has an active Paris office in 2026, with Boulogne-Billancourt and Levallois-Perret counted as Greater Paris. The list is unranked. Creative idea shops appear on our creative agencies page and social-first agencies on the social media page, so this list focuses on firms that plan, run and measure marketing.

The best marketing agencies in Paris

1. Artefact

Private · 9th arrondissement · artefact.com

Artefact is a data and AI consultancy founded in Paris by Guillaume de Roquemaurel, Philippe Rolet and Vincent Luciani, and headquartered in the 9th arrondissement. It now employs around 2,500 people across offices in Europe, Africa, the Middle East, Asia and the Americas, including more than 400 marketing specialists. Edouard de Mézerac is group CEO.

Its data marketing practice sits alongside strategy, AI engineering and data platform work. Clients include L’Oréal, Carrefour, BNP Paribas, Orange, Pernod Ricard and Accor. Artefact hosts the second Adopt AI International Summit at the Grand Palais on 3 and 4 December 2026.

2. fifty-five

Part of The Brandtech Group · Paris · fifty-five.com

fifty-five was founded in Paris in 2010 by former Google executives and is a member of The Brandtech Group. It has more than 300 staff in ten offices, from Paris and London to Shanghai and New York, and works across media consulting, customer experience, cloud and AI.

Measurement is a particular strength. Recent case studies include a Digital Twin marketing mix model for Leroy Merlin (July 2026), a Meridian MMM project for Estée Lauder (March 2026) and a connected TV offer for Bouygues Telecom. Other clients include Guerlain, LVMH, Renault Group and TotalEnergies.

3. Converteo

Independent · Paris · converteo.com

Converteo is a data and AI consultancy for marketing and customer experience, with offices in Paris, Milan, Madrid, New York and Toronto. It reports more than 200 enterprise clients and builds custom AI products, data foundations and digital tools for them.

Its client list leans towards luxury and consumer brands, including LVMH, Kering, L’Oréal, Lacoste and Accor, and it also works for Samsung. It suits marketing teams that need help with tracking, customer data and AI use cases more than with campaign execution.

4. Cosmo5 (formerly Labelium)

Independent group · 10th arrondissement · cosmo5.com

Labelium was founded in Paris in 2001, and in October 2025 the group took the name Cosmo5 to separate the group from the original agency. Led by president and CEO Stéphane Levy, it now has 30 offices in 18 countries, and its Paris office is on rue Martel in the 10th.

The group specialises in performance marketing and e-commerce, including marketplaces and retail media. Clients include Clarins, Chopard, Diageo, Fnac Darty, ba&sh and De’Longhi, with case studies for L’Oréal, KIABI, Leroy Merlin and Uniqlo.

5. Eskimoz

Independent · Boulogne-Billancourt · eskimoz.fr

Eskimoz is a search and acquisition agency with around 250 people in Paris, Lyon, Bordeaux, Lille, London, Milan, Madrid and Düsseldorf. It started in SEO and has added paid search, social ads, Amazon ads, CRO and an AI content service. It also runs its own platform, the Eskimoz App, for reporting and search monitoring.

It was named best European search agency at the European Search Awards 2026. Clients include L’Oréal, Engie, Crédit Agricole, Randstad, Swile, Hyundai and Sandro.

6. Junto

Independent · Grands Boulevards · junto.fr

Junto is a growth marketing agency founded in 2016 and based on the Grands Boulevards since 2023. It has more than 80 staff and reports over 350 active clients, mostly e-commerce, SaaS and lead generation businesses.

Paid media across Google, Meta, LinkedIn, TikTok and Amazon is the core, with tracking, CRM automation (HubSpot, Salesforce, Klaviyo) and SEO through its partner Botanik. Clients include Mirakl, Pennylane, Carglass, BMW Motorrad and Butagaz. It also runs training courses for in-house teams.

7. Primelis

Backed by Sagard · Levallois-Perret · primelis.com

Primelis began in 2009 as an SEO agency and now describes itself as a martech agency covering paid media, organic growth, retail media and attribution. It has about 170 staff, with offices in Levallois-Perret, Nantes, New York, São Paulo and Ra’anana, and the investment fund Sagard backs its growth in Europe and North America.

It reports more than 300 clients and around $1 billion of media spend managed each year, across consumer, B2B and private equity-backed brands. Its TikTok Shop and Amazon offers suit brands selling directly on those platforms.

8. Keyade

WPP Media · Levallois-Perret · keyade.com

Keyade is a digital performance consultancy founded in 2006 and now part of WPP Media. It has more than 150 staff across its Paris-area office in Levallois-Perret and an office in Dubai, working on paid search, paid social, SEO and data.

Clients include Lacoste, Danone, Yves Rocher, Allianz, Macif, Boulanger, Richemont and Ford. It suits advertisers that want a specialist search and social team with a holding-company group behind it.

9. Ad’s up

Independent · 11th arrondissement · ads-up.fr

Ad’s up Consulting is a paid media and search agency with a Paris office on boulevard de Charonne, with further offices in Lille, Marseille, Bordeaux, Switzerland and Belgrade. It covers Google and Amazon ads, social ads, programmatic display, SEO and GEO, plus a creative team for ad variations and motion design.

Les Echos included it in its 2026 list of France’s 500 growth champions. Clients include Nocibé, The Kooples, Weber, Qobuz, Cegid and Melvita.

10. Brainsonic

Independent · 11th arrondissement · brainsonic.com

Brainsonic calls itself an engagement agency and combines content, social, web, SEO, events and employer branding for B2B and consumer clients. Its office is on rue Sedaine near Bastille, and it also produces live event shows under the Brainsonic Live name.

Clients include Société Générale, Leroy Merlin, Orange Bank, Lenovo and France TV. Recent work includes Club Lookéa’s 2025 summer programme built around the game Loups-Garous de Thiercelieux, run across 30 holiday clubs.

11. Hopscotch

Listed on Euronext Growth · Sentier (2nd arrondissement) · hopscotch.one

Hopscotch is an integrated communications group headquartered on rue Notre-Dame-des-Victoires, with 40 agencies in 32 countries and about 1,200 staff. Management and staff are shareholders alongside the market. Its marketing offer spans digital and influence, events, media, public relations and consulting.

The group launched Hopscotch GEO, a reputation service for AI search environments, in June 2026, and Hopscotch Public Engagement for European institutions in October 2026. Clients and projects include YouTube, Dom Pérignon, ArianeGroup and the Paris 2024 closing ceremony. It owns the Deauville American Film Festival.

What to look for in a Paris marketing agency

Decide first whether you need advice or execution. Paris has an unusual number of data consultancies (Artefact, fifty-five and Converteo among them) that design measurement, customer data and AI programmes, often for large luxury and retail groups. Performance agencies such as Junto, Ad’s up and Eskimoz run campaigns day to day. Some firms do both, but the staffing and fees differ.

Ask how results will be measured. Several agencies above have their own marketing mix models or attribution tools, with fifty-five publishing its MMM case studies and Primelis selling attribution and incrementality work as a service. It is worth agreeing which data sources count, who owns the dashboards and how attribution will be handled before the first campaign launches.

Check search plans carefully. Several Paris search agencies now sell GEO alongside SEO, aimed at visibility in AI assistants and AI search results. Methods and reporting vary a good deal between firms, so ask for examples and for how they track progress.

Finally, look at the working rhythm. Performance marketing produces a steady stream of creative variants, reports and approvals, often in French and English for international brands. Agencies with a clear review process and one place where clients can find current assets and reports are easier to work with over a long contract.

How Fabric helps marketing agency teams

Fabric gives a marketing agency one workspace for files, client feedback and team knowledge, with AI search across all of it. The agency setup suits firms running many accounts in parallel, with a space per client holding briefs, media plans, reports and call notes. There are specific pages for performance marketing agencies and SEO agencies.

Ad creative, videos and report decks sit in Fabric’s cloud drive, which streams files on demand without filling local disks. Search works by meaning across documents, PDFs, images and transcribed recordings, and can include connected apps such as Google Drive, Notion and Gmail. A content team can turn any folder into a kanban board whose cards are the files themselves, which suits a pipeline of ad variants and articles.

For client delivery, a monthly report or audit can be published as a web page with password protection, and link analytics shows when each named recipient opened it and for how long. Clients can leave threaded comments through a shared link without signing up. Reviewers can comment on PDFs and documents, and leave timestamped comments and drawings on video.

On Team plans, self-writing docs keep a page for each client up to date from meetings, Slack and the workspace, covering decisions, deliverables and open items. AI meeting notes record calls without a bot joining, which helps with weekly performance reviews.

Password protection and link analytics are included on Pro and Team plans, and self-writing docs on Team plans from $125 a month. See plans for teams.

Frequently asked questions

What is the best marketing agency in Paris?

It depends on the job. For data, measurement and AI programmes, Artefact, fifty-five and Converteo are the best-known Paris firms. For search, Eskimoz was named best European search agency in 2026, and for paid media growth Junto, Ad’s up and Primelis each manage hundreds of clients.

What happened to Labelium?

Labelium Group renamed itself Cosmo5 in October 2025. The change separated the group name from the original Labelium agency, which was founded in Paris in 2001. The group’s Paris office is on rue Martel in the 10th arrondissement.

What is GEO, and do Paris agencies offer it?

GEO stands for generative engine optimisation: work to make a brand visible in answers from AI assistants and AI search. Eskimoz, Ad’s up and Hopscotch (through Hopscotch GEO) all list it as a service in 2026. Ask any agency how it measures results, since methods are still settling.

How is a marketing agency different from an advertising agency?

Marketing agencies here focus on planning, running and measuring campaigns across search, paid media, data and content, with results tracked against sales or leads. Advertising agencies centre on campaign ideas and brand advertising. Our list of advertising agencies in Paris covers the network offices and ad specialists.

Do Paris marketing agencies work in English?

Most of the agencies above work for international brands and run multi-market accounts, and several have offices in London, New York or across Europe. fifty-five, Artefact, Cosmo5 and Converteo all have English-language teams and clients outside France.

Related lists

Marketing agencies in other cities: New York · London · Los Angeles · Chicago · Toronto

More in Paris: Creative agencies · Advertising agencies · Social media agencies · Branding agencies · UX design agencies · Content studios

Run your agency on Fabric: Fabric for agencies · Fabric for content marketing agencies · Content planning