Jean de Thévenot was a French traveller in the East, who wrote extensively about his journeys. He was also a linguist, natural scientist and botanist.

Melchisédech or Melchisédec Thévenot was a French author, scientist, traveller, cartographer, orientalist, inventor, and diplomat. He was the inventor of the spirit level and is also famous for his popular posthumously published 1696 book The Art of Swimming, one of the first books on the subject and widely read during the 18th century. The book popularized the breaststroke ; he was inducted into the International Swimming Hall of Fame in 1990. He also influenced the founding of the Académie Royale des Sciences.