South Korea's Korea Communications Standards Commission voted on August 18 to block domestic access to Polymarket, concluding that the platform's winner-take-all markets on politics, elections, sports and weather events amount to illegal gambling under the country's strict betting laws. The order gives the regulator authority to direct local internet providers to cut off access to the site.
Polymarket had argued that its prediction markets serve an informational function distinct from traditional gambling products, but the KCSC's ruling rejected that framing, treating the binary, event-driven payout structure as functionally equivalent to a bet regardless of the platform's stated purpose.
A Review Years in the Making
The block follows a formal review the commission opened earlier this year after a complaint was filed in May, with the Communications Review Subcommittee giving Polymarket a chance in July to respond before finalizing its determination. South Korean police have separately pursued the country's first criminal case against local Polymarket bettors, tied to a wave of election-related trading activity around the country's June 3 election.
Related: Hyperliquid and Douro Labs Push SEC to Recognize Onchain Price Feeds
A Warning Shot for Prediction Markets
South Korea's decision adds to a growing list of jurisdictions scrutinizing blockchain-based prediction markets as their trading volumes have surged alongside major political and sporting events. Because the ruling frames Polymarket's markets as gambling on the basis of structure rather than any specific asset or token involved, industry watchers expect other decentralized prediction platforms to face similar regulatory tests in South Korea and comparable markets going forward, regardless of whether they brand themselves as forecasting tools rather than betting products.
