Saibai Bhonsale (née Nimbalkar) (29 October 1633[1] – 5 September 1659) was the wife consort of Chattrapati Shivaji, the founder of the Maratha Empire.

Saibai is reported to have acted as a counsel to Shivaji when he was invited by Mohammed Adil Shah, the king of Bijapur, for a personal interview.

[12] During Saibai's life time, the entire household of Shivaji bore a homogeneous atmosphere despite the fact that most of his marriages were performed due to political considerations.

[1] During the course of their nineteen years of marriage, Saibai and Shivaji became parents of four children: Sakavarbai (nicknamed "Sakhubai"), Ranubai, Ambikabai, and Sambhaji.

Sakhubai was married to her first-cousin, Mahadji, the son of Saibai's brother, Bajaji Rao Naik Nimbalkar[citation needed].

[16][17] Saibai died in 1659 in Rajgad Fort while Shivaji Maharaj was making preparations for his meeting with Afzal Khan at Pratapgad.