Nimbarkacharya (Sanskrit: निम्बार्काचार्य, romanized: Nimbārkāchārya) (c.1130 - c.1200), also known as Nimbarka, Nimbaditya or Niyamananda, was a Hindu philosopher, theologian and the chief proponent of the theology of Dvaitadvaita (dvaita–advaita) or dualistic–non-dualistic.
He played a major role in spreading the worship of the divine couple Radha and Krishna, and founded Nimbarka Sampradaya, one of four main traditions of Hindu sect Vaishnavism.
Nimbarka is believed to have lived around the 11th and 12th centuries, but this dating has been questioned, suggesting that he lived somewhat earlier than Shankaracharya, in the 6th or 7th century CE. Born in Southern India, he spent most of his life in Mathura, Uttar Pradesh.
He is sometimes identified with another philosopher named Bhaskara, but this is considered to be a misconception due to the differences between the spiritual views of the two saints.