meta-Cresol, also 3-methylphenol, is an organic compound with the formula CH3C6H4(OH). It is a colourless, viscous liquid that is an intermediate in the production of other chemicals. It is a derivative of phenol and is an isomer of p-cresol and o-cresol
Together with many other compounds, m-cresol is traditionally extracted from coal tar, the volatile materials obtained in the production of coke from (bituminous) coal. This residue contains a few percent by weight of phenol and isomeric cresols. In the cymene-cresol process, phenol is alkylated with propylene to give isomers of cymene, which can be oxidatively dealkylated (Hock rearrangement) analogous to the cumene process.