AbstractA facile and efficient procedure for the ipso‐hydroxylation of arylboronic acids to phenols in water was developed. A series of electron‐rich and electron‐deficient arylboronic acids were smoothly ipso‐hydroxylated with this protocol to afford products in excellent yields. Moreover, the protocol is amenable to boronate esters. In most cases, the phenolic products were obtained in pure form without any chromatographic purification.