For the Roman Catholic faith, the main leader would be the Pope.
There are, however, many other faiths and religious groups that do not have such a central leadership body. Other titles include Pastor, Elder, Bishop, Overseer, Imam, Rabbi, Guru, Swami...
President Gordon B. Hinckley of the Church of Jesus Christ of Latter Day Saints www.lds.org
Well there are a number of leading offices.
Pope, Cardinal, Bishop or Archbishop, Priest or Father or Rector or Reverend.
Billy Graham
Lesser
Lord Flanfa
yes he was .he was christian.
The Solo singer or singing leader in Jewish and Christian liturgical music is called the cantor.
Buddhism has many sects and schools and so there is no single religious leader. Much as the pope may be regarded as a Christian leader, he is not the leader of all Christians.
tao
The Christian Science Monitor was founded by Mary Baker Eddy in 1908. Eddy was an influential religious leader and the founder of the Christian Science religious movement.
Iman is not a religios leader. Iman is what Muslims call their faith.
The Pope - Roman Catholic, Patriarch - Eastern
Hindu Religious leader or guide is called Guru. Also many people call him Pramukh or baba.
The people who call themselves Christian.
Washingtion Gladden