This page contains a list of services that allow you to purchase or trade ETC.
The following exchanges all support Ethereum Classic. They are separated into 3 categories; centralized, trust minimizing, and instant.
Please do your own research on the exchange you choose to source Ethereum Classic. Being listed on this site does not constitute an endorsement of the exchange's services by the Ethereum Classic project.
The following exchanges may not be fully decentralized exchanges, but operate in a less centralization manner than the list above.
Note: Instant Exchanges typically offer worse rates than Centralized Exchanges.