Dayanidhi or Dhayanidhi is an Indian name. Notable people with these names include:
Given name Dayanidhi Azhagiri, Indian Tamil cinema producer and distributor Dayanidhi Maran (born 1966), Indian politician Dayanidhi Paramahansa Dev (1905–1992), Indian sadguru, yogi, mystic and a Hindu spiritual leader Dhayanidhi Sk (born 2003), founder of Makkal Raja Group, established in 2017.
Surname Santhosh Dhayanidhi, Indian film composer and singer