甲酚（化学式：CH₃C₆H₄OH），甲苯酚的简称，也称“克利沙尔”（Cresol）。根据甲基和羟基相对取代位置的不同，又有邻甲酚、间甲酚和对甲酚三种异构体。

含这三种异构体的混合物称为煤酚（cresols）。煤酚是杂酚油的重要成分。新制得时为无色液体，与日光接触，则发生氧化，色泽变深。市售品多为淡紫红色或淡棕红色的透明液体，有类似苯酚的特殊气味，微带焦臭。微溶于水，能与乙醇、氯仿、乙醚、甘油、脂肪油、挥发油以任意比例混溶，可溶于碱性溶液。

Cresols (also hydroxytoluene) are organic compounds which are methylphenols. They are a widely occurring natural and manufactured group of aromatic organic compounds, which are categorized as phenols (sometimes called phenolics). Depending on the temperature, cresols can be solid or liquid because they have melting points not far from room temperature. Like other types of phenols, they are slowly oxidized by long exposure to air and the impurities often give cresols a yellowish to brownish red tint. Cresols have an odor characteristic to that of other simple phenols, reminiscent to some of a "coal tar" smell. The name cresol reflects their structure, being phenols, and their traditional source, creosote.