The 8 Best Digital Marketing Agencies in Seoul

Comma Communications suits Korean companies and public bodies that want to reach audiences abroad. The Gangnam agency runs overseas social media, influencer campaigns, online advertising and branded content, and also produces TV commercials, events and outdoor advertising in other countries. Projects since 2016 span around 40 countries across the Americas, Europe, the Middle East and Asia. Most of its staff have worked abroad, and it uses local partners only where needed rather than handing whole projects to other agencies.

InterAd fits foreign companies whose first priority is search visibility in Korea. The agency on Teheran-ro manages Naver search ads, Korean SEO for Naver and Google, Kakao advertising, and Naver Blog and Cafe content. Social media, influencer marketing and Korean translation round out the offer, and the firm lists Google Partner status. Case studies cover a luxury car launch, a hotel and an international university, and a tailored proposal is promised within 24 hours of an enquiry.

Jellyfish Korea suits brands with sizeable paid media budgets that want measurement and data work done in the same place. The Korean arm of Jellyfish Digital Group plans and buys paid media, handles technical SEO and optimisation for AI search, and sets up GA4, BigQuery and server-side tagging. As a Google reseller it supports the DV360, SA360 and CM360 platforms. Training workshops in Korean and English let in-house teams learn the same tools.

Asiance suits luxury and premium brands that want marketing and technology from one partner in Korea. The agency in Jeong-dong, Jung-gu, combines strategy and market research with web, app and e-commerce development, then runs advertising, social media and performance campaigns on top. Its client list includes Dior and Aesop, and Kakao and Naver appear among its technology partners. The website runs in English, Korean and Japanese, and a sister office in Tokyo handles work in Japan.

Eidetic Marketing suits brands that want online campaigns built around live events and launches. The agency, with offices in Seoul, Los Angeles and Shanghai, plans brand activations, exhibitions and eSports events alongside social media, global PR and influencer work. Recent projects include car launch events and stands at trade shows such as MWC Barcelona and IFA Berlin. Search advertising and SEO are not among its listed services, so it fits product launches better than ongoing campaigns.

MNCS Korea suits multinational companies that want market research and digital marketing to start from the same data. The Cheongdam-dong agency, which works with Kleinlab, offers SEO and SEM for Google and local search engines, online advertising, social media, lead generation and retargeting. Research services cover competitive and business intelligence through its own kont3xt solution. Translation, localisation and web development are offered too, so a company can adapt its website and campaigns with one supplier.

INNORED suits large brands planning a full campaign where creative work and media buying come from the same team. The independent agency in Yeoksam-dong works across digital campaigns, TV commercials, UX and influencer content, and runs media through its own AI tools for placement, brand safety on YouTube and consumer insight. It is listed as a Google Premier Partner, and its work includes campaigns for PepsiCo Korea and LG U+. Briefs and contact run mainly in Korean.

Inquivix suits international brands that need to be found on Naver and Kakao as well as Google when they enter Korea. The Gangnam agency covers Naver SEO across search results, Blog and Cafe, Kakao channels and ads, and paid media on Naver GFA, Meta, Google and TikTok. Influencer and KOL campaigns, social media and web localisation fill out the offer. Korean-native strategists and copywriters work behind an English-language website, which helps teams briefing the agency from abroad.