Best Social Media Agencies in Brussels (2026)

Introduction

Brussels has a compact but varied social media scene, and the 7 agencies below cover most of it: a network social specialist, two influencer agencies, a social-first shop running dozens of always-on accounts, an EU policy communications agency and two smaller Brussels studios that handle social for local brands.

The city’s position shapes the work. Belgian brands need content in French and Dutch, and often English too, while the EU institutions and the associations around them buy social campaigns of their own. In May 2026 Ogilvy Social.Lab, led from Saint-Josse-ten-Noode, retained the European Commission’s “Voices of Humanity” campaign for DG ECHO for a further year. Influencer marketing has also grown up locally: Efluenz now sits inside the Rossel media group, and BeInfluence runs campaigns from Brussels and Paris.

Every agency here has an active office in the Brussels-Capital Region in 2026, checked against its own site or a trade page. We set out to list 10 to 12 firms, but held the list to 7 because we could not confirm a Brussels office for several other candidates. The list is unranked.

The best social media agencies in Brussels

1. Ogilvy Social.Lab

Ogilvy (WPP) · Saint-Josse-ten-Noode · sociallab.ogilvy.com

Ogilvy Social.Lab is WPP’s social specialist and the Ogilvy network’s centre of excellence in social. Its headquarters are on Square Victoria Régina in Saint-Josse, and it has teams elsewhere in Europe. Each January it publishes a Social Trends report; the 2026 edition came out on 28 January.

Much of its Brussels work is for the EU institutions. In May 2026 it led a WPP consortium that retained the European Commission’s “Voices of Humanity” campaign for DG ECHO, covering strategy, social, influence, content, media and evaluation across member states. For institutional and multi-market briefs it brings network production and media within reach.

2. BeInfluence

Independent · Watermael-Boitsfort · beinfluence.eu

BeInfluence calls itself an influencer and social agency, with offices in Brussels and Paris. Its services run from influencer campaigns and paid social to UGC and creator content, events and PR boxes. Thomas Angerer is co-founder and chief creative officer.

The agency says it was the first European influencer agency to win a D&AD Pencil and the first influencer agency named Specialist Agency of the Year in Belgium. Clients shown on its site include Carrefour, Amazon, the European Commission, Pernod Ricard, Henkel, ING and Decathlon.

3. Socialsky

Independent · Auderghem · socialsky.eu

Socialsky describes itself as a social-first agency and covers strategy, in-house production, community management, influencer work and paid social on Meta and TikTok. Valentin Pliester founded it in 2017, and Frédéric Van Damme joined five years later. Its Brussels office is on Boulevard du Souverain, with a second office in Antwerp, and the team numbers about 40 across Belgium and France.

The agency works in both French and Dutch and says it runs around 70 brands on always-on social in Belgium. Clients include Basic-Fit, Delhaize, bpost, Leonidas, Pathé, Yves Rocher and O’Tacos.

4. Efluenz

Rossel group · City centre (Rue Royale) · efluenz.eu

Efluenz is an influencer marketing agency founded in 2018 and now part of the Rossel group, the Belgian and French publisher behind Le Soir. It runs B2B and B2C campaigns with creators, influencers and UGC talent from offices in Brussels, Lille and Amsterdam.

Clients named on its site include Proximus, Live Nation, Ice Watch and the City of Antwerp. Rossel ownership gives it close links to a large Belgian publishing and media group, which can help when a campaign mixes creators with editorial or advertising space.

5. The Right Street

Independent · European Quarter · therightstreet.digital

The Right Street is a policy communications agency on Square Ambiorix, a short walk from the Berlaymont. It plans and runs digital and social campaigns for organisations that want to reach EU decision-makers, alongside insight, content, advertising and campaign technology.

Organisations shown on its site include the European Commission, the European Parliament, Google, BEUC, EFPIA, UNESDA and Vaccines Europe. It publishes regularly on policy communications; recent posts cover the AI Act and advertising in ChatGPT. It suits associations and public-affairs teams more than consumer brands.

6. Curryketchup

Independent · Dansaert · curryketchup.be

Curryketchup is a Brussels communications agency on Rue d’Alost, near Rue Antoine Dansaert, that has been running for about ten years. Social media management sits alongside digital strategy, visual identity, websites, photo and video production and press relations.

Its clients are mostly Brussels food, drink and lifestyle brands, including Pierre Marcolini, Quartz restaurant, Gran Chaco rum and Marie’s Corner, plus professional firms such as the law firm EQUI. It suits a brand that wants social, photography and design handled by one small team.

7. Nep Agency

Independent · Brussels · nepagency.be

Nep Agency is a Brussels digital communications agency working in three areas: brand identity and design, digital advertising, and social media management and content strategy. Its portfolio was updated through 2026, with recent projects for Greenzy, Optisuite and eMotio.law.

Its best-known client is Chouffe, the Duvel Moortgat beer brand, whose digital brand lead gives a testimonial on the agency’s site. Other clients include Ditar, Berquin Jewels and D&O Partners. It is a good fit for brands that want social content and paid campaigns from the same small team.

What to look for in a Brussels social media agency

Start with languages. Most Belgian brands need content in French and Dutch, and EU or international accounts add English. Ask whether the agency writes natively in each language, or translates from one, and who does the community management on each. Socialsky and Efluenz both work across Belgium’s language border, which matters for national brands.

Match the agency to the audience. Consumer brands need creators, short-form video and fast community response. Associations and public bodies trying to reach policymakers need something else: careful targeting, sign-off from legal and policy teams, and reporting that holds up in front of a board. Brussels has specialists for both, and few agencies do both equally well.

For influencer work, ask how creators are chosen, contracted and paid, how disclosure is handled under Belgian rules, and who owns the content afterwards. Ask what the agency will report beyond reach and views.

Then look at the production rhythm. Social teams turn round a lot of small files every week: edits, captions in two or three languages, thumbnails and creator rushes. Agree early where the latest versions live, how clients give feedback on video and images, and how approvals are recorded, so a post does not go out in the wrong language or the wrong cut.

How Fabric helps social media agency teams

Fabric gives a social team one workspace for content, client feedback and account knowledge, with AI search across all of it. The agency setup works well for social shops running many always-on accounts: one space per client, holding briefs, brand assets, creator content and call notes together. There is more on this in Fabric for social content creation.

Video edits and creator rushes sit in Fabric’s cloud drive, which streams files on demand so they take no local disk space. Uploaded video and audio are transcribed and searchable, and search works by meaning across documents, images and recordings, so a team can find the clip where a creator mentions a product in either language.

For review, share a file or folder with the client as a commenter. Shared links work without sign-up. With annotations, clients leave timestamped comments on video and audio, draw on a video frame or an image and attach a comment to the drawing, and the team marks each comment completed as it is fixed, so feedback works like a checklist. The review and approval page shows the workflow.

A content calendar can run as a Kanban board whose cards are the files themselves, moving from draft to approved to scheduled. On Team plans, self-writing docs maintain a page for each client from meetings, Slack and the workspace, covering decisions, deliverables and open items.

Self-writing docs are included on Team plans, from $125 a month. See plans for teams.

Frequently asked questions

What is the best social media agency in Brussels?

It depends on the brief. For EU institutional and multi-market campaigns, Ogilvy Social.Lab has the deepest network resources. For always-on social across French and Dutch, Socialsky says it runs around 70 Belgian brands. For influencer campaigns, BeInfluence and Efluenz are both specialists.

Which Brussels agencies specialise in influencer marketing?

BeInfluence and Efluenz are the two influencer specialists on this list. BeInfluence works from Brussels and Paris, and Efluenz from Brussels, Lille and Amsterdam as part of the Rossel group. Socialsky also runs influencer campaigns alongside its always-on social work.

Can a Brussels social media agency handle EU institution work?

Yes, several do. Ogilvy Social.Lab retained the European Commission’s “Voices of Humanity” campaign for 2026, and The Right Street runs social and digital campaigns for associations and policy audiences from the European Quarter. EU contracts usually go through public tenders or framework contracts, so check whether the agency already holds one.

Do Brussels agencies produce content in French and Dutch?

Most of the agencies here work in French, and several work in both languages. Socialsky, for example, has offices in Brussels and Antwerp and serves both markets. Ask to see recent work in each language you need.

Where can I find a broader full-funnel or performance agency in Brussels?

Our list of the best marketing agencies in Brussels covers full-funnel, performance and EU public-affairs consultancies, which suit briefs where social is one channel in a wider programme.

Related lists

Social media agencies in other cities: Paris · Amsterdam · London · New York · Toronto

More in Brussels: Creative agencies · Marketing agencies · Advertising agencies · Content studios · Video production · Design agencies

Run your agency on Fabric: Fabric for agencies · Fabric for creative teams · Content planning