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.
The Jewish leaders that interpret God's will are called Mashiach.
The Kohenim (priests), however, they weren't leaders of the Jewish people, they were in charge of the Temple.
A Jewish "leader" is a Rabbi which means teacher.
Israel
The perform the wedding ceremony.
Rabbi
The Jewish leaders whom you're asking about are called Rabbis. Each Rabbi may lead a synagogue (Jewish place of prayer) and/or a Jewish community.
The Rabbis and sages. See also:Important Jewish leaders, prophets and rabbis
Places of worship: synagogues. Leaders: rabbis.
The leaders of Judaism are Rabbis. The followers of Judaism are the Jewish people.
Ech and Ach
The Pharisees which were Jewish religious leaders