Maximilian van der Sandt (born at Amsterdam, 17 April 1578; d. at Cologne, 21 June 1656), known as Sandaus or Sandaeus, was a Dutch Jesuit.
He entered the novitiate of the Society of Jesus, 21 November 1597; he taught philosophy at Würzburg, and Sacred Scripture at Mainz. He became superior of the episcopal seminary at Würzburg.
He wrote many works on philosophy and theology, among others a notable controversial reply to the Batavian Calvinist Lawrence in defence of the moral teaching of the Jesuits, Castigatio conscientiae Jesuiticae cauteriata. . .a Jacobo Laurentio, Würzburg, 1617. It was said of him that he left a book for every one of the seventy-eight years of his life, several devotional treatises on the Blessed Virgin, and many ascetical and mystical treatises.