Anekamūrti (Anekamurti) is one of the names described in Viṣṇusahasranāmastotra (Vishnusahasranamastotra, Thousand Names of God Vishnu).

Mahābhārata (Kinjawadekar)(13.149.90)
Mahābhārata Vols. 1-43 (Siddhāntabāgīśa)(13.127.90)