Eri Klas (born in Tallinn, 1939) is an Estonian conductor.

Klas has mainly worked in the Nordic scene since, but might be best known for his work leading the defunct Netherlands Radio Symphony Orchestra. He premiered Alfred Schnittke's 1st Cello Concerto (Munich Philharmonic, 1986) and Peer Gynt ballet (Hamburg State Opera, 1989), and has worked on the diffussion of the Estonian symphonic repertory. He is also active as a pedagogue, holding professorships at the Sibelius Academy (1993–97) and the Estonian Academy of Music and Theatre (1997– ), where he has received an honorary doctorate.