Sanjana is a Parsi surname. Notable people with the surname include:

Darab Dastur Peshotan Sanjana (1857–1931), Indian scholar and priest Dastur Peshotan Behramji Sanjana (1829–1898), Indian scholar and Zoroastrian head-priest Jahangir Edalji Sanjana (1880–1964), Gujarati literary critic and professor Sandhya Sanjana, Indian singer

See also Sanjana, an unrelated given name