South Korea Blocks Polymarket After Classifying It as Illegal Gambling
South Korea.- 20 August 2026 | www.zonadeazar.com South Korea has ordered domestic access to Polymarket to be blocked after determining that the prediction market platform provides an environment that may constitute illegal gambling under national law.
The decision adds South Korea to the growing list of jurisdictions restricting Polymarket and increases international regulatory pressure on event-based prediction markets.
Regulator Orders Access Block
The measure was approved by a communications review subcommittee of the Korea Media and Communications Standards Commission.
The authority concluded that Polymarket provides information and services capable of facilitating gambling or the operation of gambling venues under South Korea’s Criminal Act.
It also determined that the platform could fall within prohibited categories under the National Sports Promotion Act.
Winner-Takes-All Structure Examined
A central element of the decision was the structure of contracts offered through Polymarket.
Users can make or lose money depending on the outcome of events involving areas such as:
- Politics.
- Sport.
- Economics.
- Weather.
- International conflicts.
The regulator concluded that a model in which financial gains and losses depend on events users cannot control carries characteristics associated with speculative gambling.
Polymarket’s Operational Role
Authorities also examined the extent of Polymarket’s involvement in operating its markets.
Factors considered included:
- Creating markets.
- Establishing trading rules.
- Providing digital-asset deposit and withdrawal systems.
- Settling transactions.
- Charging transaction fees.
The regulator considered these functions relevant when assessing whether the platform actively creates and facilitates a gambling environment.
Polymarket Challenges Application of Korean Law
Polymarket argued that it had removed its Korean-language service and does not support payments in South Korean won.
The company also pointed to its non-custodial peer-to-peer architecture and use of blockchain smart contracts, arguing that it does not directly manage users’ funds.
South Korean authorities rejected those arguments.
The commission said companies cannot avoid domestic legislation solely because of language availability, technical characteristics or the decentralised nature of parts of their services.
South Korea-Specific Markets
Authorities also highlighted the availability of contracts linked directly to events in South Korea.
One example involved a market allowing users to trade on the level of rainfall in Seoul during August.
Regulators considered this type of locally relevant content another factor indicating that the platform could serve Korean users.
Consultation with National Authorities
Before reaching its decision, the regulator consulted several domestic institutions.
These included:
- Korean National Police Agency.
- Gambling Control Commission.
- Korea Sports Promotion Foundation.
The organisations indicated that Polymarket’s activities could fall within domestic legislation governing gambling and the establishment of gambling venues.
International Regulatory Pressure Grows
South Korea joins other jurisdictions that have imposed restrictions on Polymarket over gambling-related concerns.
The international debate largely centres on how prediction markets should be legally classified and whether event-based contracts should be considered financial instruments, forecasting products or gambling.
Regulatory interpretations continue to differ substantially between jurisdictions, generating enforcement actions and legal disputes across multiple markets.
Next Steps or Impact
The block prevents domestic access to Polymarket and establishes a clearer South Korean position on crypto-based prediction markets.
The ruling also demonstrates that technological decentralisation, digital-asset settlement or the absence of local-currency payments do not necessarily place platforms outside the scope of national gambling laws.
For the prediction markets sector, the South Korean case provides another indication that international expansion will increasingly depend on compliance with jurisdiction-specific regulatory frameworks.
Editó: @fonta
