* Rev. (Reverend) - This is the most common prefix for ordained ministers.
* Fr. (Father) - Used for Catholic priests and some other denominations.
* Pastor - Often used, particularly in Protestant denominations.
* Elder - Used in some denominations, particularly Presbyterian and some evangelical churches.
* Bishop - Used for those who hold a high position in the church hierarchy.
It's important to note that these prefixes are used differently in different denominations. For example, "Reverend" is widely used, while "Father" is more specific to Catholicism.
It's always best to use the title that is most respectful and accurate for the individual minister.