Top Advertising Agencies in South Korea

Researched by:Goodfirms Research TeamUpdated:September 9, 2026

Goodfirms has reviewed 12 Advertising Agencies in South Korea as of September 2026. The top-ranked firm is Comma Entertainment (5.0 stars, 1 verified reviews, $50 - $99/hr, founded 2015, Seoul). Across the category, the median hourly rate is $25, median client rating is 5, and 25% of firms employ 50+ members. Explore the vetted Advertising Agencies in South Korea companies below, compare their strengths, and connect with the provider best suited to your requirements.

Are you looking for top advertising agencies in South Korea? Advertising plays an integral part in not only stimulating the customer to make a purchase but also to expand the market. Creative solutions from the best advertising agencies in South Korea will help you fight competition, enhance good-will, and educate the customer about your products more efficiently. Online advertising lets you be flexible in your ad types and also have analytics, which gives you key performance indicators right at your tips. The best online marketing companies in South Korea will improve your brand awareness along with giving you a better understanding of your performing areas. Goodfirms has prepared a list of the top advertising companies in South Korea rated on their quality, reliability, and ability.

12Verified firms
$25/hrMedian hourly rate
5 ★Median rating
25%Have 50+ members

Goodfirms has verified 12 Advertising Agencies in South Korea - part of 8,032+ Advertising Agencies & Ad Companies, each passing Goodfirms' 4-step verification process (background check, client interviews, portfolio audit, ongoing quality review). Listings marked "Sponsored" are agencies that pay for premium placement - sponsorship does not affect star ratings or review content.

Top 10 at Glance

Compare the highest-ranked firms first side by side.

Rank
Company
Rating
Reviews
Hourly Rate
Team Size
Founded
Location
Action

List of Marketing Companies in South Korea | Top Ad Agencies in South Korea

Find a Advertising Company Near you
Find a Advertising Company Near you
Service
Hourly Rate
Employees
ReviewsAll Companies
Industry
Client Type
  • Comma Entertainment is a creative marketing agency based in Seoul, South Korea. They provide a one-stop customized marketing strategy service for Korean companies as well as foreign companies. They focus on the importance of having consistent branding across all online and offline assets. Therefore they ... read Comma Entertainment reviews & insights

    $50 - $99/hr
    10 - 49
    2015
    Seoul, South Korea
    Established appropriate strategies and made a successful result by producing high-quality contents - Anonymous
  • Waterbe is an End to End Korean mareketing partner that helps forien brands thrive in the Korean market.

    $100 - $149/hr
    10 - 49
    2020
    Seoul, South Korea
    Professional, responsive, fast and flexible. They've done a great job - Gloria Anderson
  • BBDO is the world's most awarded and effective advertising agency with 15,000 employees in 289 offices across 81 countries.BBDO Worldwide is a global, full-service marketing communications agency network. At BBDO, our mantra is “The Work. The Work. The Work.”We believe passionately in the power of creativity to move people and therefore move brands and businesses ... read BBDO reviews & insights

    < $25/hr
    10000+
    1891
    Seoul, South Korea
  • Using AI Tools

    • ClaudeClaude

    Content marketing that leads to clinic visits, not just views. 200PRO Advertising Agency implements medical marketing that reduces information asymmetry for patients.

    NA
    2 - 9
    2024
    Seoul, South Korea

    Why 200pro광고회사?

    • Provide proven hospital expertise and information
    • Customer customized smooth communication
    • Deliver high quality content
  • INNOCEAN Worldwide was founded in 2005, and mainly manages the global marketing communication of the Hyundai Motor Company. With 22 offices in 17 countries and over 1,600 employees, we establish and carry out brand communication strategies, and provides total marketing solutions for our 50+ clients.

    < $25/hr
    1,000 - 9,999
    2005
    Seoul, South Korea
  • Since its founding in 1982, Dae Hong has led numerous marketing successes in the past 38 years and has been making numerous success stories . We are trying to provide the most creative solutions for the digital convergence era and to be ahead of the trend

    < $25/hr
    250 - 999
    1982
    Seoul, South Korea
  • GroupM is the world’s leading media investment company responsible for more than $45B (COMvergence) in annual media investment through agencies including Mindshare, MediaCom, Wavemaker, Essence and m/SIX, as well as the outcomes-driven programmatic audience company, Xaxis. GroupM creates competitive advantage for advertisers via its worldwide organization of media experts who deliver powerful insights on consumers ... read GroupM reviews & insights

    < $25/hr
    10000+
    Seoul, South Korea
  • Leo Burnett is a communications agency powered by its HumanKind operating system, with the belief that creativity, data and technology work together to transform human behavior and drive prosperity for clients.

    < $25/hr
    1,000 - 9,999
    1935
    Seoul, South Korea
  • STONE is a brand communication company providing holistic solutions through innovative methodologies and enticing creativity. Led by Simon Park (CEO), STONE continues to offer a series of sensational brand transformation and creation consultation services in the global market

    < $25/hr
    10 - 49
    2011
    Seoul, South Korea
  • Just like a punch line, digital marketing is all about having a storyline, knowing the audience, being creative, and the right delivery. PPC, SEO and social media full serivce digital marketing consultancy in Korea. We are an inbound marketing agency in Seoul that has the insights and ambition to help grow your business. Many companies, ... read Punch Digital Marketing reviews & insights

    $100 - $149/hr
    2 - 9
    2016
    Seoul, South Korea
  • With the expertise of the award-winning digital marketer and strategist, HY Marketing agency owner Hyein Yoon, and the support of her team of global marketers, you can expect quality localized translation, copywriting, and SEO services to elevate your marketing strategy. We helped tech startups like Bottari and GuitarFlyer, e-commerce businesses such as NAROO Mask and ... read Hyein Yoon reviews & insights

    NA
    10 - 49
    Seoul, South Korea
  • Using AI Tools

    • ChatGPTChatGPT
    • GeminiGemini
    • ClaudeClaude

    Oneplan Marketing is a data-driven AI marketing agency founded in 2019 and headquartered in Dongjak-gu, Seoul, South Korea. We specialize in AI SEO, GEO (Generative Engine Optimization), and AEO (Answer Engine Optimization) — helping brands get discovered not only on Google and Naver, but also cited and recommended by AI search engines such as ChatGPT, ... read oneplan marketing reviews & insights

    $50 - $99/hr
    2 - 9
    2019
    Seoul, South Korea

    Why oneplan marketing?

    • All In-House Operation No Outsourcing
    • Korea's Pioneer in GEO
    • Proven Results Across 200 Brands

Post your project. Get proposals from PRO-verified firms.

Goodfirms recommends the top 3. You pick the winner.

Why Trust Goodfirms

Goodfirms is the world’s leading reviews and ratings company featuring 100,000+ tech companies from across the globe, complete with 80,000+ humanly vetted client reviews, detailed portfolios, hourly rates, employee strength, and more to help you choose your perfect tech partner.

Humanly-Vetted Client Reviews

Our researchers have personally vouched for the authenticity of 80,000+ client reviews by speaking directly with clients, cross-checking project details, timelines, and results to ensure 100% credibility.

Data-Driven Rankings

Data powers our company listings. Every company listed is evaluated based on its expertise, experience, market presence, reviews, and client satisfaction rate, which helps buyers confidently choose the right tech partner.

Global Trust & Recognition

Goodfirms is trusted by 100,000+ businesses in 160+ countries to connect with reliable tech partners. Our reputation is built on 80,000+ verified reviews and rankings you can trust.

Transparency In Detail

From verified client reviews and portfolio highlights to service focus and pricing, Goodfirms provides a 360-degree view of every company, helping 2+ million monthly users find the perfect tech partner.

Trending insights from Goodfirms

Valuable insights from top experts accelerate decision-making.

How Can Effective Creative Advertising Make Your Brand Engaging?
AI Video Generator Pricing in 2026: What You're Actually Paying For
How Top Global iGaming Operators Scale Across Regulated Markets: Lessons from Betsson, Flutter, and Entain
Read all research articles

1 states with the best Value Score for hiring.

Ranked by a composite blending firm count (supply), average rating (quality), and average hourly rate (cost). Affordability is weighted highest (50%), so this surfaces genuinely affordable destinations - not just the biggest markets.

Where the firms are.

Bubble size shows how many firms each country has; colour shows its average hourly rate. Tap any country for its firm count, average rate, rating, and Value Score.

Loading map…

All states ranked by Value Score.

Every state in scope, ranked by Value Score.

StateFirmsAvg RateAvg RatingValue ScoreAction
KRSeoul12$55/hr576View firms
KRSeoul
12 firms$55/hr5
Value Score76 / 100

Match by work-hour overlap with your team.

Cost matters - but so does being able to actually talk to your developer during your workday. Here are the best destinations for each major hub.

If you're in US (PT/ET)Recommended

Look for nearshore LATAM partners - same-day collaboration, similar time zones, and 50-60% cost savings vs domestic.

MXMexico~7h overlap
ARArgentina~6h overlap
BRBrazil~5h overlap
CACanada~8h overlap
If you're in Europe (CET/GMT)Recommended

Eastern Europe is your sweet spot - 1-2h time zone shift, EU GDPR alignment, and 40-50% lower rates than Western Europe.

PLPoland~8h overlap
UAUkraine~7h overlap
RORomania~7h overlap
ZASouth Africa~8h overlap

How firms are placed on the matrix

Every position on this chart is the output of the Goodfirms ranking algorithm - a weighted composite of signals across two axes. The algorithm is recomputed regularly and is fully documented.

Sponsorship does not affect placement. PRO members receive visible badges and ad placements, but their algorithmic scores are calculated identically to free listings.

Read the full methodology
Algorithm at a glance
1
X-axis (Core Competencies): Service Focus Ratio + Portfolio Depth + Quality + Experience
2
Y-axis (360-Performance): Client Reviews + Market Presence + Goodfirms Score
3
Missing signals are excluded from a firm's score, not substituted with defaults - weights redistribute across remaining inputs
4
Recency decay over the last 18 months keeps stale reviews from dominating
5
Eligibility floor: ≥ 1 published review in this category scope

Found your target region?

Browse all firms in your chosen country - or let us hand-pick matches based on your project, budget, and time-zone preference.

Get matched firms

States with the best Value Score for advertising hiring.

Ranked by a composite score blending firm count (supply), average rating (quality), and median hourly rate (cost). Affordability is weighted highest (50%), so this list surfaces actually affordable destinations rather than just-big markets.

Budget leader
Seoul · $0-24/hr

6 firms in this tier - more than any other state. Top picks: Innocean Worldwide, Daehong Communications, GroupM.

Mid-tier leader
Seoul · $50-99/hr

2 firms in this tier - more than any other state, averaging 5.0 ★. Top picks: Comma Entertainment, oneplan marketing.

Loading heatmap…
Cell intensity (firm density):
Low
High
Best Value marks the densest, highest-rated, most-affordable cell per row

How the heatmap is built

Every cell in the grid above is the count of firms in (place × hourly-rate tier). Firms are placed by their published hourly rate; those without a disclosed rate are not plotted.

Top company names per cell are surfaced by Value Score - a weighted blend of affordability (50%) + rating (35%) + review volume (15%).

The "Best" ribbon marks the cell in each row where firm density, ratings, and affordability line up best - the densest, highest-quality combination.

Read the full methodology
Value Score · per firm
ValueScore = 0.50 × Affordability
+ 0.35 × Rating
+ 0.15 × Review Volume
// All sub-scores normalized 0-100
// Affordability = (1 - rate/$200) × 100
// Rating = (rating - 3) / 2 × 100
// Volume = log10(reviews+1)/log10(200) × 100

Found your target region?

Browse all advertising firms in your chosen country - or let our AI hand-pick 3 matches based on your project, budget, and time-zone preference.

Get 3 AI-Matched Firms