What do you call a Hindu religious teacher?

Answer 1

Hindu religious teachers called as uppathiayar-krishnan

Aacharya

Answer 2

The terms can vary according to the language, however, the following are most common in English:

A Guru is a holy teacher; a spiritual leader, preceptor or enlightener. Occasionally, a Brahmin who teaches

An Acharya (Acarya) is one who teaches by example. The term usually refers to prominent or exemplary spiritual leader.

Swami or "controller" more specifically, called a "Goswami" (one who can control his/her senses) is an honorific title applied to a religious teacher or holy person, particularly a sannyasin (a sannyasin is a renuciate who, having given up worldly affairs and attachments, has entered the forth stage of life, often as a mendicant).

A Yogi (male) or Yogini (female) is someone who practices yoga, a traditional Indian spiritual discipline which includes meditation and spiritual exercises. Generally, these terms are only used to describe masters and teachers of this discipline who teach yoga as a means of aiding spiritual practices towards the attainment of peace.
Aacharya, Mahant, Guru

Answer 3

Teachers are called Gurea Named after a shrine