Nilgiri

Nilgiri, which literally means "Blue Mountain", may refer to:
 * Nilgiri Biosphere Reserve, an International Biosphere Reserve in the Western Ghats and Nilgiri Hills ranges of South India
 * Nilgiri mountains, a range of mountains spanning the states of Tamil Nadu and Kerala in Southern India
 * Nilgiri Mountain Railway, Tamil Nadu
 * The Nilgiris District, a region of the Indian state of Tamil Nadu
 * Nilgiri tea, a dark intensely aromatic and flavourful tea grown around the Nilgiris in Tamil Nadu and Kerala in Southern India
 * Nilagiri or Nilgiri, a town in Balasore District of the state of Odisha in East India
 * Nilgiri (Odisha Vidhan Sabha constituency), Assembly constituency of Odisha, India
 * Nilgiris (supermarket), supermarket chain in South India
 * Nilgiri Himal, a range of three peaks in the Annapurna region in Nepal
 * INS Nilgiri (F33) class frigate
 * Nilgiri-class frigate (2019) - new class frigates are under construction for Indian Navy
 * Neelagiri, a town in Tamil Nadu, India
 * Neelagiri (film), a 1991 Indian film by I. V. Sasi
 * Neelagiri Express, a 1968 Indian film
 * Nilgiri, a hill resort in the Bandarban District of Bangladesh