Romania's National Office for Gambling (ONJN) has blacklisted Polymarket, a blockchain-based prediction market, for operating unlicensed crypto gambling.
The decision was made on October 29, 2025, after an unprecedented spike in crypto wagering linked to the country's recent presidential and local elections.
Polymarket's operations constitute unlicensed gambling rather than legitimate event trading.
Author's summary: Polymarket banned in Romania for unlicensed crypto gambling.