EtherRock, also called EthRock, is an early Ethereum based non-fungible token (NFT) project from 2017 that depicts various-colored rocks.

[2] In December 2017, 100 EtherRocks were produced via a smart contract, using artwork taken from a clipart website,[2] and published on the Ethereum blockchain.

Only 30 rocks were sold in the first three years of the project's existence.

[2] Justin Sun has been reported to have bought an EtherRock for $500,000.

[4][5] In March 2022, a collector by the name of "Dino Dealer" claimed to have accidentally listed an EthRock for 444 WEI ($0.0012 USD) instead of 444 ETH ($1.2M USD), and said that it had been immediately sniped by a bot.