Kuar Lachman Singh, also known as Raja Lachhman Singh, (9 October 1826 - 1896), was an Indian deputy collector of the district of Bulandshahr, North-Western Provinces (NWP), India, and author of "Historical and Statistical Memoir of Zila Bulandshahar" (1874), commissioned by Lieutenant Governor of the NWP William Muir. He also produced a Hindi translation from Sanskrit of "Shakuntala" and Meghadūta.