Father Louis Cardon (25 December 1857 – 11 February 1946) was a Belgian Jesuit missionary who worked among the Chota Nagpur tribes in current day Jharkhand in India.
He studied the local culture, collected plants and insects and contributed illustrations to the Encyclopaedia Mundarica.
He accompanied Count Henry le Grille who was visiting Torpa and then he stayed at Karra as a guest of Father Walter Frencken.
His initial areas of work included Noatoli, Gumla, Soso, Majhatoli as well as Barway, Chechari and Biru.
The acting commissioners of Lohardaga, Renny and Lillington met Cardon and threatened the missionary of actions similar to that taken by Bismarck on German Jesuits.
[3][4][5] Cardon also travelled to the northeast of India (Kurseong, possibly during summers) and collected plants (particularly orchids[6]) and insects in these areas and sent them to collectors in Europe, some sold for money.
[7][8] Several new species were described based on these specimens including the tiger beetle Cicindela cardoni which was named his honour by the French entomologist Edmond Jean-Baptiste Fleutiaux.