Acyutah
Another name of Vishnu, meaning 'the infallible' or 'the imperishable'.
Posts
Adimurti
One of Vishnu's avatars, representing the primal form.
Aditi
Mother of the Devas, representing boundlessness and fertility.
Adityas
The offspring of Aditi, solar deities representing different aspects of the sun.
Advaita Vedānta – School of Non-Dualism
Consolidated by Ādi Shankaracharya (8th century CE), Advaita proposes that Brahman is the only reality, and the phenomenal world is an illusion (māyā). It teaches that individual consciousness (ātman) and universal consciousness (Brahman) are identical, famously expressed as 'Tat Tvam Asi' (That Thou Art).
Agastya
A revered sage who was instrumental in spreading Vedic knowledge to South India.