South Korea’s media regulator has voted to restrict domestic access to Polymarket, one of the world’s largest decentralized prediction market platforms.
The Korea Communications Standards Commission made the decision on August 18, 2026, ruling that Polymarket operates in a way that falls under illegal gambling provisions in South Korea’s Criminal Act.
The decision marks a significant escalation in a regulatory dispute that has been developing for several months.
South Korea Rejects Polymarket’s Decentralization Argument
South Korean regulators concluded that Polymarket’s winner-takes-all structure encourages speculative activity similar to traditional gambling.
According to the regulator, markets based on events that participants cannot control, including politics, elections, sports and weather, contain key characteristics associated with gambling.
Polymarket argued that it operates through a non-custodial, peer-to-peer smart contract system rather than as a traditional centralized gambling platform.
The company also pointed to its removal of Korean-language services as evidence that it was no longer specifically targeting South Korean users.
However, regulators rejected those arguments.
Authorities said that technical decentralization does not automatically exempt a platform from South Korean law if the service effectively provides an illegal gambling environment to domestic users.
Korea-Specific Polymarket Markets Draw Scrutiny
Polymarket had already removed Korean-language support and restricted access to some South Korea-focused markets in July 2026 while regulatory proceedings were underway.
However, regulators reportedly highlighted previously available markets tailored specifically to Korean users.
One example was a prediction market related to rainfall in Seoul during August.
Authorities cited such localized contracts as evidence that Polymarket had actively offered services relevant to the South Korean market.
Following the latest ruling, South Korean telecommunications companies are expected to implement internet service provider-level restrictions against the platform.
VPN Users Could Still Face Legal Risk
The access restrictions may not completely prevent users from reaching Polymarket through tools such as virtual private networks.
However, the report states that individuals who continue participating could still face enforcement under Article 246 of South Korea’s Criminal Act.
Potential penalties can reach up to 10 million won, equivalent to roughly $6,500 based on the figures cited in the report.
The regulatory crackdown has been developing since at least May 2026, when South Korean authorities formally began reviewing the platform following complaints from users.
By June, prosecutors had reportedly started criminal investigations involving domestic Polymarket users.
Polymarket Faces Growing Global Restrictions
South Korea is not the first country to restrict access to the prediction market platform.
According to the report, France, Germany, Australia, Indonesia and India have also introduced restrictions affecting Polymarket.
Although each country applies its own legal framework, regulators have generally focused on the same issue: whether real-money prediction markets based on uncertain events should be classified as gambling.
The growing number of restrictions creates additional challenges for Polymarket as it attempts to expand internationally.
U.S. Regulators Are Also Increasing Scrutiny
Regulatory pressure on prediction markets is also growing in the United States.
New York City authorities have reportedly examined Polymarket and other companies over concerns related to advertising practices.
Meanwhile, the U.S. Commodity Futures Trading Commission has warned both Polymarket and rival prediction platform Kalshi over the presentation of gambling-style odds.
According to the original report, the White House was also scheduled to meet with cryptocurrency and prediction market executives on August 19.
The South Korean decision adds further urgency to the broader debate over how decentralized prediction markets should be regulated.
Polymarket Faces Increasing Regulatory Pressure
The Korean restriction comes as Polymarket continues to attract attention from major financial institutions and regulators.
JPMorgan reportedly maintained banking relationships with the company despite having previously ended certain banking services for the platform.
This relationship has received renewed attention as speculation grows around a possible Polymarket initial public offering.
At the same time, regulatory uncertainty remains one of the biggest challenges facing the prediction market industry.
South Korea Ban Could Affect Polymarket Liquidity
For market participants, South Korea’s decision introduces another layer of geographical restriction risk.
South Korea remains one of Asia’s most active cryptocurrency markets, making access to local users potentially important for trading activity on digital asset platforms.
Reducing the number of users who can legally access Polymarket could lower activity in some prediction markets.
Lower liquidity can potentially lead to wider spreads and reduced market depth, particularly in less actively traded contracts.
The original report noted that there was no immediate data showing a direct impact on trading activity following the Korean decision.
Nevertheless, continued regulatory restrictions across several major jurisdictions could become an increasingly important factor for Polymarket as it attempts to grow its global user base.
