Spiritual leaders are called Rabbis. The person who leads prayers during religious services are called cantors. Judaism is not a centralised religion and doesn't have the kind of hierarchy associated with other religions.
Rabbis
The Rabbis and sages. See also:Important Jewish leaders, prophets and rabbis
These religious leaders were called the Kohanim or High Priests. In terms of regional and religious politics, they were called the Sadducees. Opposing them were the Pharisees or populist Jewish leaders that would eventually become the Rabbinate.
A great sage of judisim or in other words a Rabbi is a religious leader.
The perform the wedding ceremony.
The Pharisees which were Jewish religious leaders
theocracy-a government controlled by religious leaders
the system of electing religious leaders to office is called a
The Jewish leaders that interpret God's will are called Mashiach.
Rabbis.
Judaism isn't a centralised religion so leaders are at the community level. Leaders can be religious or secular depending on how they're associated with their community.
Israel
It is called a theocracy.