A short form of “Key Opinion Leaders.” It defines an industry influencer. In NFT, a KOL is someone whose decision impacts an NFT project. You can find many NFT KOLs on Twitter. Examples include @garyvee (Gary Vaynerchuk), @beaniemax (Beanie), and many more.
This KOLs party announcement on Twitter by @ELTblack:
“A KOL meeting party will be held on 24 July in LAMany influencers and NFT experts will be gathered in the party and meet up with our users.”