Amitāśanā (Amitasana) is one of the Mātṛkā (Matrika; an order of lesser female deities), present as an associate during the coronation of Skanda-Kārtikeya (Kartikeya).

Mahābhārata (Kinjawadekar)(9.46.7)
Mahābhārata Vols. 1-43 (Siddhāntabāgīśa)(9.42.52, see footnote, vol. 29, p. 478)