Resorcylic acid, resorcinolic acid, or carboxyresorcinol are names for a type of dihydroxybenzoic acid structurally related to resorcinol. They may refer to:
In each case, the hydroxyl groups are meta to each other and thus are m-dihydroxybenzoic acids.
Carboxylates and esters of these compounds are called resorcylates or resorcinolates.