Vaitheeswaran Koil is a Hindu temple dedicated to the Shiva, located in the Indian state of Tamil Nadu. Shiva is worshipped as Vaidyanathar or Vaitheeswaran meaning the "God of healing" and it is believed that prayers to Vaitheeswaran can cure diseases. Vaitheeswaran is a Tamil derivative from vaidya (Doctor) and Ishvara (God/Master). The presiding deity is Sri vaidyanathan, facing towards West whereas East side is the common one. He is the God of Healing. When pronouncing in Tamil, it sounds like "vaideeswaran". It is one of the nine Navagraha temples and is associated with the planet Mars (Angaraka).

Navagraha (Pron: nævəˈgrɑ:ə) pilgrimages are pilgrimages devoted to Navagraha—the nine (nava) major celestial bodies (Grahas) of Hindu astronomy. These temples are made of stone. These celestial bodies are named Surya (Sun), Chandra (Moon), Mangala (Mars), Budha (Mercury), Brihaspati (Jupiter), Shukra (Venus), Shani (Saturn), Rahu and Ketu. Many temples in South India contain a shrine dedicated to the Navagrahas. However, the term Navagraha temples refers to a cluster of nine separate temples, each an abode of one of the Navagrahas.