Mudaliar (alternatively spelled: Mudhaliar, Muthaliar, Mudar, Mudhar, Muthar, Mudali, Mudhali, Muthali or Moodley) is a title used by people belonging to various Tamil castes. Castes using the title speak Tamil as their native language. The title was mostly used among Tamils from Tamil Nadu and Sri Lanka, and was given to a high-ranking military officer.
The title was primarily used by the communities like the Agamudaya Mudaliar (Thuluva Velallar), Karaiyars, Sengunthars and Vellalars. Other communities adopted it as means to present themselves as superior to the social status which they actually held.