Tucano, also Tukano or Tucana, endonym yeʼpâ-masa yee uúku͂sehé, is a Tucanoan language spoken in Amazonas, Brazil and Colombia.

Many Tariana people, speakers of the endangered Tariana language are switching to Tucano.

Nasal sounds [m n ŋ] are variants of voiced stops /b d ɡ/ between nasal vowels. Stops may also be heard as prenasalized [ᵐb ⁿd ᵑɡ] after nasal vowels. /w/ can be heard as a nasal bilabial semivowel [β̞̃] in the environment of nasal vowels. Allophones of /ɾ/ can be heard as [ɾ̃], [ɺ].