Mandhatṛi or Mandhata (Sanskrit: मान्धाता, Māndhātṛ) was a legendary prehistoric king of the Raghuvaṃśa branch of the Suryavamsha or Solar dynasty of India.

He proceeded to vanquish the kings Marutta of Ushiraviga, Asita, the Druhyu king Angara, Nriga, Brihadratha of Anga, Suna, Jaya, Janamejaya, Sudhanvan, Gaya of Kanyakubja, Angara's son Gandhara, and several others in battle.

The Mahabharata states that Mandhatṛ, the King of Ayodhya, gave away colossal statues of Rohita fish, entirely made up of pure gold and spanning several kilometres to the Brahmanas as a charity.

Mandhatṛ married the Chandravamsha princess, Bindumati, daughter of Shashabindu, King of the Yadavas.

Indra told Mandhatṛ that the asura Lavana, the son of Madhu and Kumbhinesi, the sister of Ravana, the king of Lanka were not a subject to his rule.

However, he became bored with earthly dominions and sought to rule all the cosmos, including the celestial realms.

But, Mandhata immediately fell from heaven onto earth and died after imparting a final moral lesson to the people.

He supposedly visited the area on his way to the sacred lake Manasarovar beside the axis mundi Mount Kailash.