Michael Wiedenkeller (born 10 January 1963) is a Swedish and Luxembourgian chess player.

[2] In 1999, he tied for second with Vlastimil Jansa in the Donne Haas Memorial in Luxembourg.

[5] In 2014, Wiedenkeller won the inaugural European Small Nations Individual Championship (FIDE Zone 1.10 Championship) in Larnaca, Cyprus.

This achievement earned him one of the five FIDE president's nominations for the Chess World Cup 2015.

[9] In this latter event, Wiedenkeller helped the Luxembourgian team to finish first in 2011 (held in Klaksvík, Faroe Islands) and 2015 (Saint Peter Port, Guernsey).