In Christianity, minor orders are ranks of church ministry. In the Catholic Church, the predominating Latin Church formerly distinguished between the major orders —priest, deacon and subdeacon—and four minor orders—acolyte, exorcist, lector, and porter. In 1972, the Vatican re-titled the minor orders as "ministries", with those of lector and acolyte being kept throughout the Latin Church. In the Eastern Orthodox Church, the three minor orders in use are those of subdeacon, reader and chanter.

In some Christian denominations, a reader or lector is the person responsible for reading aloud excerpts of scripture at a liturgy. In early Christian times the reader was of particular value due to the rarity of literacy.