Sajjan Singh is the name of:
- Sajjan Singh of Udaipur (1859âÂÂ1884), Maharaja of the princely state of Udaipur, 1874âÂÂ1884
- Sajjan Singh of Ratlam (1880âÂÂ1912 or 1913), British Indian Army officer and Maharaja of Ratlam State, 1893âÂÂ1947
- 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