In most Protestant churches, a minister is a member of the ordained clergy who leads a congregation or participates in a role in a para-church ministry; such a person may also be called a Pastor, Preacher, Bishop or Elder.

Requirments to be a minister vary between denominations and churches. Some denominations require an advanced degree from a seminary, this however is not a Biblical mandate to become a minister.

The Biblical requirements to be a minister or "bishop" (Episcopay (Greek)) are outlined in 1 Timothy 3:1-16 by the Apostle Paul. 1Ti 3:1-16 This is a true saying, If a man desire the office of a bishop, he desireth a good work. (2) A bishop then must be blameless, the husband of one wife, vigilant, sober, of good behavior, given to hospitality, apt to teach; (3) Not given to wine, no striker, not greedy of filthy lucre; but patient, not a brawler, not covetous; (4) One that ruleth well his own house, having his children in subjection with all gravity; (5) (For if a man know not how to rule his own house, how shall he take care of the church of God?) (6) Not a novice, lest being lifted up with pride he fall into the condemnation of the devil. (7) Moreover he must have a good report of them which are without; lest he fall into reproach and the snare of the devil. (8) Likewise must the deacons be grave, not doubletongued, not given to much wine, not greedy of filthy lucre; (9) Holding the mystery of the faith in a pure conscience. (10) And let these also first be proved; then let them use the office of a deacon, being found blameless. (11) Even so must their wives be grave, not slanderers, sober, faithful in all things. (12) Let the deacons be the husbands of one wife, ruling their children and their own houses well. (13) For they that have used the office of a deacon well purchase to themselves a good degree, and great boldness in the faith which is in Christ Jesus. (14) These things write I unto thee, hoping to come unto thee shortly: (15) But if I tarry long, that thou mayest know how thou oughtest to behave thyself in the house of God, which is the church of the living God, the pillar and ground of the truth. (16) And without controversy great is the mystery of godliness: God was manifest in the flesh, justified in the Spirit, seen of angels, preached unto the Gentiles, believed on in the world, received up into glory.

In the Catholic Church minister is not a title used by the ordained clergy (e.g. priests) nor is it a form of address for them, see Catholic minister.

See also: Political minister