English physician and author of the first English guidebook to Europe.

Boorde was educated at the University of Oxford and was admitted as a member of the Carthusian order while still a minor. In 1521 he was “dispensed from religion” to act as suffragan bishop of Chichester, though he never filled the office, and in 1529 he was freed from his monastic vows, not being able to endure the hardships of religiosity. He visited the universities of Orléans, Poitiers, Toulouse, Montpellier, and Wittenberg, saw “much abominable vices” at Rome, and went on pilgrimage to Santiago de Compostela in Spain. In 1534 Boorde was again in London at the Charterhouse. Then the statesman Thomas Cromwell seems to have sent him to determine public feeling abroad about Henry VIII's policies. In 1536, however, he was studying and practicing medicine at Glasgow.

About 1538 Boorde again traveled extensively, visiting nearly all the countries of Europe and later making his way to Jerusalem. He settled for a time at Montpellier in France and before 1542 had completed his First Book of the Introduction of Knowledge, in prose and “ryme doggerel” (1548), which ranks as the earliest continental guidebook. He also published Dietary of Health (1542?) and Breviary (1547). He probably returned to England in 1542. His imprisonment toward the end of his life may have been for keeping “loose women” in his quarters at Winchester.