Nidhi (Sanskrit: निधि, romanized: nidhi) is a Sanskrit term meaning, "treasure". It is generally used to indicate the nine treasures called navanidhi (Sanskrit: नवनिधि, romanized: navanidhi) belonging to Kubera, the god of wealth. According to tradition, each nidhi is personified as having a guardian spirit, with some Tantrikas worshipping them. The nature and characteristics of nidhis have remained largely unexplained and have not been fully understood.

According to the Amarakosha and the Padma Purana, the nine nidhis are: