Udai Singh may refer to:
Udai Singh I (died 1473), ruler of Mewar during 1468–1473 Udai Singh II (1522–1572), ruler of Mewar during 1540-1572 Udai Singh of Marwar (1538–1595), ruler of Marwar during 1583-1595 Udal of Mahoba also Uday Singh, a heroic Indian warrior, contemporary of Prithviraj Chauhan Udai Singh II of Dungarpur (1839–1898), ruler of Dungarpur during 1844-1898 Udai Singh of Pratapgarh (1848–1890), ruler of Dungarpur during 1864-1890
See also Uday Singh (disambiguation)