Sajjan Singh is the name of:
Sajjan Singh of Udaipur (1859–1884), Maharaja of the princely state of Udaipur, 1874–1884 Sajjan Singh of Ratlam (1880–1912 or 1913), British Indian Army officer and Maharaja of Ratlam State, 1893–1947 Sajjan Singh (wrestler) (fl. 1960s), Indian Olympic wrestler Sajjan Singh Cheema, Indian basketball player Sajjan Singh Sindarli, Indian politician Sajjan Singh Verma, Indian politician Sajjan Singh, fictional Indian soldier in Sajjan Singh Rangroot (), a 2018 Indian Punjabi-language war drama film by Pankaj Batra