Nidhi Subbaiah (born 16 February 1982) is an Indian film actress and model, who has appeared in various television advertisements and in South Indian films, primarily in Kannada. After making her acting debut in the Telugu film Sweet Heart (2009), she acted in few Kannada films such as Pancharangi (2010) and Krishnan Marriage Story (2011). Both these films brought her nominations for South Filmfare Awards and the latter film won her SIIMA Award Special Appreciation-Actress-Kannada.

Nidhi was born in Coorg/Kodagu, Karnataka, India as the only child to Bollachanda Subhash Subbaiah and Jhansi Subbaiah.

She first ventured into modelling, appearing in various television commercials, She made her acting debut with Abhimaani in 2009. She has also acted in Suri's Anna Bond that features her alongside Puneet Rajkumar and Priyamani.The film did fairly well at the box office.[5] She made an appearance in Poornima Mohan's School Days. She got nationwide attention when she appeared in CCL 2012 calendar. Nidhi's first Bollywood movie is titled Oh My God where she plays a role of TV Journalist.