Taman Nasional Tesso Nilo adalah sebuah taman nasional  yang terletak di provinsi Riau tepatnya di Kabupaten Pelalawan dan Kabupaten Indragiri Hulu  Taman  nasional ini diresmikan pada 19 Juli 2004 dan kini Taman Nasional Tesso Nilo menjadi salah satu primadona Wisata Riau. 
Terdapat 360 jenis flora yang tergolong dalam 165 marga dan 57 suku,  107 jenis burung, 23  jenis mamalia, tiga jenis primata, 50 jenis ikan, 15 jenis reptilia dan 18 jenis amfibia di setiap  hektare Taman Nasional Tesso Nilo. Tesso Nillo juga adalah salah satu  sisa hutan dataran rendah yang menjadi tempat tinggal 60-80 ekor gajah dan merupakan  kawasan konservasi gajah selain itu Taman Tesso Nilo juga sebagai tempat  pelestarian habitat harimau  Sumatera.
Masyarakat di sekitar Taman Nasional Tesso Nilo mempertahankan pohon Sialang dan mengambil madu dari lebah yang ada di pohon sialang  dan menjadikan madu hutan sebagai  usaha ekonomi alternatif. 
Tesso Nilo National Park  is a national park located in Riau province, exactly in Regency  Pelalawan and Indragiri Hulu Regency Park was inaugurated on July 19,  2004 and now Tesso Nilo National Park became one of the excellent  Tourism Riau. 
There are 360 species of flora which belong to 165 genera and 57 tribes, 107 species of birds, 23 species of mammals, three types of primates, 50 species of fish, 15 species of reptile and 18 amphibian species in each hectare Tesso Nilo National Park. Tesso Nillo also is one of the remaining lowland forests are home to 60-80 elephants and an elephant conservation area in addition to the Garden of Tesso Nilo as well as the Sumatran tiger habitat preservation.
There are 360 species of flora which belong to 165 genera and 57 tribes, 107 species of birds, 23 species of mammals, three types of primates, 50 species of fish, 15 species of reptile and 18 amphibian species in each hectare Tesso Nilo National Park. Tesso Nillo also is one of the remaining lowland forests are home to 60-80 elephants and an elephant conservation area in addition to the Garden of Tesso Nilo as well as the Sumatran tiger habitat preservation.
Communities surrounding the Tesso Nilo National Park to maintain the tree and take the honey from the beehive bees in the tree honey beehive and make the forest as an alternative economic enterprises.

