Nidhi is a Sanskrit feminine given name and a Thai masculine given name that may refer to the following notable people:

• Nidhhi Agerwal, Indian actress and dancer
• Nidhi Bisht (born 1985), Indian casting director filmmaker, lawyer, actress and writer
• Nidhi Buley (born 1986), Indian cricketer
• Nidhi Chanani (born 1980), Indian-American freelance illustrator and artist
• Nidhi Eoseewong (born 1940), Thai historian, writer, and political commentator
• Nidhi Goyal (born 1985), Indian disability and gender rights activist
• Nidhi Jha, Indian actress
• Nidhi Razdan (born 1977), Indian journalist, television personality and journalist
• Nidhi Subbaiah (born 1987), Indian film actress and model
• Nidhi Sunil (born 1987), Indian model and actress, and philanthropist
• Nidhi Uttam, Indian television and film actress
• Nidhi Yasha (born 1983), Indian costume designer