Magdalene "Mieken" Rieck (26 April 1892 – 27 December 1977), married name Magdalene Galvao, was a German tennis player active in the early 20th century.

Rieck, who was a member of Harvestehuder THC in 1910 and 1911, won the singles title at the German Championships in Hamburg.

Her most significant result was winning the singles title at the World Hard Court Championships in 1913 in Paris, after reaching the final of this clay court tournament in 1912.

[1] In 1911 and 1913, Rieck participated in the Wimbledon Championships and reached the third round (last 16) in 1913 which she lost to Phyllis Satterthwaite.

She entered the tennis event at the 1912 Olympic Games in Stockholm but did not play her first round match against Norwegian Valborg Bjurstedt.