Some popular cryptocurrency exchanges that do not require Know Your Customer (KYC) verification include:

Bisq: A decentralized, peer-to-peer (P2P) exchange that allows users to buy and sell cryptocurrencies without the need for personal information.

LocalBitcoins: A P2P exchange that allows users to buy and sell Bitcoin using a variety of payment methods, including cash.

HodlHodl: A P2P exchange that allows users to trade without the need for personal information, but they require multisig escrow to be enabled for each trade.

Wasabi Wallet: A privacy-focused Bitcoin wallet that allows users to buy and sell Bitcoin on the built-in exchange without the need for personal information.

Shapeshift: A non-custodial exchange that allows users to trade cryptocurrencies without the need for personal information or an account, but it may have a high fee.

Please note, Cryptocurrency is a highly volatile and risky asset class, also KYC is required for some countries and exchanges, so it's important to check the regulations of your country before using a non-KYC exchange. Also, do your own research and choose the exchange that best suits your needs.