Nicolás Factor (29 June 1520 – 23 December 1583) was a Spanish Roman Catholic priest and a professed member from the Order of Friars Minor as well as a painter of the Renaissance period.

[2] Factor served as an apt preacher across his region - despite wanting to be sent to the foreign missions - and was noted for his practices of self-mortification before he gave sermons.

[3] In his childhood he fasted three times a week and donated all of his untouched food to the poor and also tended to the ill.

Factor became a sought-after itinerant preacher across his region after his request to go to the foreign missions was denied, and was known for undergoing rather severe self-mortifications before he gave each sermon.

He also served as the spiritual director of the Santa Clara convent in Madrid beginning in 1571 at the request of Joan of Habsburg.