Tri Yann is a Breton band from Nantes, France, who play folk rock music drawing on traditional Breton folk ballads.

The band was founded in 1970 by Jean Chocun, Jean-Paul Corbineau and Jean-Louis Jossic – all of whom remain members – hence the suggested name of Tri Yann an Naoned (Breton for "Three Johns of Nantes"), Jean and Yann being respectively the French and Breton versions of the name John.