Ajarn

Ajarn is a Thai title meaning teacher or professor. The term is written in Thai as อาจารย์ and is derived from the Sanskrit-Pali root acārya, which conveys the idea of a learned master or instructor. In Thai usage, ajarn functions as both a job title and a form of respectful address for someone who guides others in learning or training.

In everyday Thai, students and colleagues commonly address their teachers as Ajarn followed by the teacher’s given name, for example Ajarn Somchai. In formal writing or during introductions, the title accompanies the name. The form is widely used across educational levels, from primary schools to universities, and it often signals seniority or considerable teaching experience.

In Buddhist and related contexts, ajarn is also used to show respect for senior instructors who teach the Dhamma or mentor both lay and monastic students. Within temples, a respected monk or lay teacher who provides instruction may be addressed as Ajarn [Name], reflecting the teacher’s educational or spiritual role.

Notes and variations: While ajarn is a common and respected title, its exact rank or significance can depend on context. It is not tied to a single fixed academic rank in the way some languages use terms like professor; instead, it denotes teaching authority and experience within Thai society. The term stands apart from similar titles in other languages, serving a broadly analogous function of recognizing instruction and expertise.