Uttamaujā (Uttamauja) is one of the sons of the second Sāvarṇi (Savarni) Manu in future.

Brahmāṇḍapurāṇa (Maharṣi)(3.1.71)
Garuḍapurāṇa(1.87.39)

Viṣṇupurāṇa (Vishnupurana) has referred to him as the son of Brahmasāvarṇi (Brahmasavarni) Manu.

Viṣṇupurāṇa(3.2.28)
Mārkaṇḍeyapurāṇa(94.15)