Minna Lammert (16 February 1852 – 1921), also Minna Lammert-Tamm and Minna Tamm, was a German operatic mezzo-soprano.
For decades a singer of the Hoftheater in Berlin, she appeared in the first complete performance of Wagner's Der Ring des Nibelungen at the first Bayreuth Festival in 1876 as one of the Rhinemaidens.