Tso (Tsóbó, Lotsu, Cibbo) is one of the Savanna languages of eastern Nigeria.
The language is known as nyi tsó, while the people are known as Tsobo [tsó-bó]. The ethnic subgroups are,
A subsection of the Gusobu may also live in Luzoo settlement.
Each ethnic subgroup speaks a different Tso dialect. The Swaabou and Gusobu reportedly have trouble understanding each other. Tso lexical diversity is partly due to the tradition of word tabooing.