Best Social Media Agencies in Seoul (2026)

Introduction

Seoul’s social media market runs on creators, short-form video and two domestic platforms, and the 11 agencies below cover that range. They include creator networks such as Sandbox Network and SOON ENT, channel and campaign shops such as The SMC, and firms that help overseas brands work on Naver and Kakao.

Creator businesses have grown into sizeable advertising companies. Seoulz reported 2025 revenue of about 72 billion won for Sandbox Network, with advertising making up 59.5 billion won of it, and SOON ENT told Financial News that its first-half 2025 network revenue rose about 140% to 12 billion won. Not every proposed deal has gone through: CJ ENM explored selling its DIA TV network in 2023, and takeover talks with Treasure Hunter broke down. Large group agencies such as Cheil Worldwide (Samsung) and Innocean (Hyundai Motor Group) also shape the market, and the firms here are the specialists working on creator, channel and short-form briefs.

Every firm here showed an active Seoul or Greater Seoul office on a page checked for this list in 2026. The list is unranked, since the right choice depends on your category, your budget and whether you are already established in Korea.

The best social media agencies in Seoul

1. Sandbox Network

Private, venture-backed · Yongsan-gu · sandbox.co.kr

Sandbox Network is a creator company founded in 2014 by the creator Doti (Na Hee-sun) and Lee Pil-seong. It works from Central Park Tower in Yongsan and covers creator management, advertising, IP licensing, direct-to-consumer products and format development through SBX Studios. Korea Investment & Securities was reported in early 2026 as lead underwriter for its planned KOSDAQ listing.

Its advertising arm designs creator campaigns from data and trends, with clients reported to include Roborock, Epic Games, Nexon and Amorepacific. Recent newsroom items include an online-only meal kit launched with Tanghwa Kungfu Malatang in September 2026.

2. SOON ENT

Private · Mapo-gu

SOON ENT is a short-form specialist founded in 2016 and led by CEO Park Chang-woo. It moved into a whole building in the Mapo area in June 2025 and then reported 737 affiliated creators with about 1.1 billion combined followers and subscribers. Digital Insight reported that TikTok Korea named it its first media lab and network partner in 2019.

Its roster includes Kim Pro, reported as the first Korean YouTuber to reach 100 million subscribers, and the short-form actor Yu Baekhap. Campaign work includes a global promotion for the Madrid Tourism Board, and Seoulz lists Incheon International Airport Corporation and the Bucheon International Fantastic Film Festival as clients. It also runs a commerce platform, Soon Shop, for brands that want sales attached to their creator work.

3. Treasure Hunter

Private · Seongsu-dong · treasurehunter.co.kr

Treasure Hunter is a creator network founded in 2015, with offices in JK Tower in Seongsu-dong. Its site describes a network of more than 600 premium creators, with AI-based matching for brands that want to find collaborators. Earlier descriptions cover beauty, gaming, lifestyle and entertainment channels, along with work in China and South East Asia.

Services extend from creator management to branded content, live commerce and merchandising, and AnyMind Group signed a partnership with the firm in December 2023. The pages checked for this list name no brand clients, so ask for references in your category.

4. The SMC

Private · Gangnam · thesmc.co.kr

The SMC describes itself as a digital consultancy and says it has been producing content for 17 years. It is based on Bongeunsa-ro in Gangnam, with a branch on Seolleung-ro and a global office in Ho Chi Minh City. It also runs its own trend titles, including the Gogumafarm and Mix publications, alongside The SMC Content Lab.

Featured work includes an influencer campaign for a Dreame launch show in Seoul, the IP series “Brian’s Cleaning Lab” for the same brand, a summer wellness campaign for Olive Young and a collaboration across about 100 creators for HK inno.N, managed with AI tools. Partner logos on its site include Samsung Electronics, Hyundai Motor, CJ and Krafton.

5. Creatip

Independent · Gangnam · creatip.co.kr

Creatip was founded in 2008 and works from Dosan-daero in Gangnam, with operating companies in Tokyo and Taipei. Its site lists AOY awards for Independent Agency (gold, 2025), Performance Agency (silver, 2025) and Influencer Agency (bronze, 2024). The firm handles influencer work, social channel operations and short-form brand films, and buys social media on Meta, TikTok and LINE.

Clients include MUSINSA, for which it built an influencer performance dashboard, along with Lotte Chilsung, Coway, Jeju Air, Versace, Calvin Klein and lululemon. Performance media is a large part of the business, so it suits briefs where social and paid work need to sit together.

6. TALENTism

Private · Gimpo, Greater Seoul · talentism.co.kr

TALENTism is an influencer and celebrity marketing agency for international brands entering Korea, founded in 2014 according to Favikon. Clutch lists influencer marketing as 70% of its work, the highest share among the Seoul firms it lists in that category. Its site gives a registered address in Gimpo and refers to a Seoul team.

Services cover influencer marketing, celebrity endorsement and product placement, with supporting campaigns on Naver, Kakao, Coupang and YouTube Korea. It works with drama studios and talent agencies, which is useful for K-content tie-ins. Its site gives testimonials from unnamed clients only, including a global cosmetics brand and a luxury hotel group, so ask for named references.

7. Waterbe

Private · Gangnam · waterbecorp.com

Waterbe was founded in 2020 and focuses on Naver and Kakao marketing for foreign brands, with bilingual account managers and English reporting. Clutch shows 13 reviews with a 5.0 rating, and places it among the leading Seoul firms in its influencer category.

Work spans Naver Blog content, Kakao advertising, influencer marketing, social media management and video production. Influencer Marketing Hub cites a World of Warships campaign. It suits small and mid-sized international brands that want Naver-first content, with influencer work built around it.

8. AJ Marketing

Singapore-headquartered · Gangnam · ajmarketing.io

AJ Marketing was founded in 2019 and runs its Asian network from Singapore, with a Seoul office on Hakdong-ro in Gangnam. It reports more than 3,500 content pieces across YouTube, Instagram and TikTok, and holds 33 reviews with a 5.0 rating on Clutch.

Its TikTok BONUS campaign, using Korean and Thai lifestyle influencers, reported more than 85 million impressions and 17 million views, according to Seoulz. Brand logos on its site include TikTok, lululemon, Philips and MINI. Seoulz notes that a Singapore base may mean less depth on Korea-only platforms, so ask how much of your account the Seoul team will run.

9. Inquivix

Founder-led · Gangnam · inquivix.com

Inquivix is a Korea market-entry agency led by founder and CEO Joon K Lee, with its headquarters on Teheran-ro 70-gil in Gangnam and a second office in Daegu. It says it has supported more than 120 brands in over 10 years, with a bilingual team that works in Korean and reports in English.

Its influencer service covers creator sourcing, Korean briefs, fee and rights negotiation, pre-publication review and monthly reporting across Naver Blog, YouTube, Instagram and TikTok. Named work includes a Korean landing page and B2B lead generation for Rhenus. It also publishes indicative creator fees, which is useful when setting a first budget.

10. InterAd

Korean agency · Gangnam · interad.com

InterAd has worked in Korean search since 2001 and is based at 503 Teheran-ro in Gangnam. Search remains the core of the business, with social media built on the same domestic platforms: Naver Blog and Cafe, Kakao Channel and Kakao advertising, plus influencer sourcing.

Logos on its site, labelled as clients or partners, include Samsung, Philips, Emirates, LVMH, Marriott and Sephora. It suits overseas brands whose first priority is being found on Naver, with social work following from that. Brands looking for short-form creative will be better served by the creator networks above.

11. Asiance

Private · Jung-gu · asiance.com

Asiance was founded in 2004 and works from Jeong-dong in central Seoul, with a second office in Tokyo. Its focus is luxury, premium and lifestyle brands, and Kakao and Naver appear among its technology partners. Its 2026 output includes a report on KakaoTalk brand performance in 2025 and a Korea luxury consumer report.

Work on its site includes “Connect local fans to Dior” and projects for Tumi, Moët Hennessy, Aesop, Vacheron Constantin and LG ID, the last using social content for B2B leads. Seoulz cites Kakao channel management for Breitling. It suits European luxury houses that want KakaoTalk run as a brand channel.

What to look for in a Seoul social media agency

Start with the type of firm. Creator networks such as Sandbox Network, SOON ENT and Treasure Hunter hold relationships with their own rosters, which helps with speed and access, though it can narrow the choice of talent. Independent agencies can cast across the market, and it is reasonable to ask how each one is paid when it books a creator from a network.

Check platform fit by category. Inquivix’s guidance pairs beauty with Naver Blog and Instagram, and food with Naver Blog and TikTok. Naver and KakaoTalk need their own content and account set-up, so ask for examples of work on those platforms as well as on global ones.

Ask how results will be measured, and at what cost. Inquivix publishes indicative fees of about 100,000 to 500,000 won per post for Naver Blog micro-influencers, and 5 million won or more per deliverable for top YouTube and celebrity creators. Search lift, referral traffic and attributed sales tell you more than follower totals. Regulated categories such as cosmetics and health supplements may need pre-clearance and disclosure checks, so take that question to your legal team before a campaign starts.

Short-form work creates a lot of small files and fast decisions. A campaign with dozens of creators can produce hundreds of cuts, each with its own usage rights and approval status, often in two languages. Ask where raw footage and final versions are kept, who signs off each cut, and how quickly a brand comment reaches the creator.

How Fabric helps social media agency teams

Fabric gives a social media agency one workspace for files, client feedback and team knowledge, with AI search across all of it. The setup for social content teams suits firms running many channels at once, with a space for each client that holds briefs, creator footage, captions and call notes.

Creator footage sits 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 those transcripts, with results that jump to the timestamp. Editors can use it to find a line a creator said in an old shoot.

Review works through shared links. Share a cut or a folder with the client as a commenter, and they can use the link without signing up. Media review lets them leave timestamped comments on video and audio, draw on a video frame, or draw on an image and attach a comment. The team marks each comment completed, so a round of feedback works like a checklist. The review and approval guide describes the full workflow. Published links are for finished work: they are view-only, with optional download, and take no comments.

Any folder can also become a Kanban board whose cards are the files themselves, which suits a content pipeline moving from brief to edit to approved. For campaign reports and pitch decks, link analytics shows when each named recipient opened a link and how long they spent with it.

Link analytics is included on Pro and Team plans. See plans for teams.

Frequently asked questions

What is the best social media agency in Seoul?

The right agency depends on the brief. Sandbox Network, SOON ENT and Treasure Hunter suit creator-led campaigns, The SMC and Creatip suit brands that want channel and campaign work together, and Waterbe, Inquivix and TALENTism focus on overseas brands entering Korea.

Which Seoul agencies specialise in short-form video?

SOON ENT is the clearest short-form specialist on this list, with a roster built around TikTok and YouTube creators. Sandbox Network and Treasure Hunter also run large creator networks, and Creatip produces short-form brand films. For larger content production, see the list of content studios in Seoul.

Do overseas brands need a Seoul agency for Naver and Kakao?

A Korean-speaking team is the practical requirement, since Naver Blog content, Kakao channels and creator briefs all run in Korean. Waterbe, Inquivix, InterAd and Asiance all work with overseas clients on these platforms from Seoul.

How much does influencer marketing cost in Korea?

Inquivix publishes indicative fees of about 100,000 to 500,000 won per post for Naver Blog micro-influencers, 500,000 to 3 million won for mid-tier bloggers and Instagram creators, and 5 million won or more per deliverable for top YouTube and celebrity creators. It says international campaigns typically spend US$5,000 to US$20,000 per month on influencer fees, plus agency management.

What is the difference between a creator network and a social media agency?

A creator network, often called an MCN in Korea, manages creators under contract and sells campaigns using its roster. A social media agency usually runs a brand’s channels and strategy, and books creators from across the market. Several firms on this list do both, so ask which model applies to your account.

Related lists

Social media agencies in other cities: New York · London · Los Angeles · Singapore · Sydney

More in Seoul: Creative agencies · Marketing agencies · Advertising agencies · Branding agencies · Content studios · Video production

Run your agency on Fabric: Fabric for agencies · Fabric for TikTok agencies · Fabric for Instagram agencies