There is no true "Christian Leader" in the present day in age IF you speak of it in terms of men. While there are pastors (and the bosses of pastors), they are not the 'Christian Leaders' although they lead their church; there is no MAN who leads all of Christians.
However, all Christians follow the teachings of Jesus Christ, the Son of God.
An all-powerful God, Jesus (the Son of God), and the Holy Spirit make up the 'Trinity' which is what most Christians follow and believe in.
However, in terms of men (or women, obviously), there is none. (psst. We don't need one. ;) )
Jesus is the son of God who is the one that created the Earth. Jesus is the religion leader.
The title of the world leader of the main religion Christianity is The Pope.
Pope.
Jesus!
the Apostle Paul
The Pope.Jesus.God. ?
Many leaders have allowed Christianity and many have prohibited it.
Jesus Christ is the spiritual leader of all Christians.
because
usually the pastor at a church
Clovis
Basically, Jesus Christ.
Sid Roth is a Jewish leader converted to Christianity. You can read about him on several locations but I have included one of his websites on the related link below.