Pd/C was found to catalyze the Suzuki−Miyauracoupling reaction of halophenols in aqueous media. Whenhalophenols were treated with ArB(OH)2 and a catalyticamount of 10% Pd/C (0.3 mol % Pd) in aqueous K2CO3solution, the corresponding hydroxybiaryls were obtained ina high yield or quantitatively. The palladium catalyst waseasily recovered and reused.