The year 1547 in science and technology included a number of events, some of which are listed here.

• John Dee visits the Low Countries to study navigation with Gemma Frisius.
• The first chair of mathematics at the University of Heidelberg is given to the physician Jacob Curio.
• Charles de Bovelles publishes La Geometrie practique in Paris, with assistance from Oronce Finé.
• Girolamo Gabuccini publishes the first separate treatise on parasitic worms.^[1][2]

• February 18 – Bahāʾ al-dīn al-ʿĀmilī, Lebanese-born philosopher and astronomer (died 1621)
• March 1 – Rudolph Goclenius, German philosopher and polymath (died 1628)
• November 26 – Nicolaus Taurellus, German philosopher and scientist (died 1606)

• January 16 – Johannes Schöner, German astronomer and cartographer (born 1477)
• December 2 – Hernán Cortés, Spanish explorer (born 1485)