Abhai Singh Rathore (7 November 1702 – 18 June 1749) was an 18th-century Indian Raja of the Kingdom of Marwar (Jodhpur).

[citation needed] In 1730, under his order, minister Giridhar Bhandari led a royal party to Khejarli to fell some Khejri trees that were sacred to the villagers.

The feudal party said they would not cut the trees if she paid a bribe, which she refused to do since she saw such an exchange as ignominious and insulting to her faith.

The group returned to Jodhpur with their mission unfulfilled, and Abhai Singh subsequently ordered that no more trees should be felled.

Later his forces looted Rovada and Posaliya (today near Sumerpur-Pali), where the king of Sirohi, fearing destruction by the large Marwar army, presented his daughter Jas Kanwar in marriage to Abhai Singh.

Kesari Singh ji, having pre-decided to perform saka (a last stand before defeat), was in the foremost row and went into the war with swords in both hands and no shield.

However, although he steered the battle towards victory by killing chief enemy commanders, he was immortalised- being one of the rarest and bravest warriors whose body fought even after getting beheaded.

The princes of Idar, Bhuj, Parkar, Sind and Sirohi, the Chalukya Ran of Fatehpur, Jhunjunu, Nagor, Dungarpur, Banswara, Lunawara, and Halwad owed allegiance to Abhai Singh of Marwar.

The Champawats bore the brunt and lost Karan of Pali, Kishan Singh of Sandri, Gordhan of Jalor, and Kalyan.

The Kumpawats also lost several clan leaders, such as Narsingh, Surtaan Singh, and Padma, son of Durjan.

Bakht Singh responded by writing, "Since Bikaner was also a Rathore state, thus a collateral branch who would serve Marwar in times of peril."

During the fighting, he was wounded and his intestines came out, but he tightly packed his abdomen with a cloth and fought until all the Marwar troops withdrew from Bikaner.

[15] For the general's loyalty to him, the Maharaja built a cenotaph of him in Chintamani Fort, and gifted a 4,000 bigga of land (named 'Rasisar', adjoining Deshnok) to his son Lunkaran Singh Rajpurohit.