Marius Žiūkas (born 29 June 1985 in Prienai) is a race-walker who competes internationally for Lithuania.

At the 2012 International Road Walking Festival in Alytus, Lithuania he won the 20 km race, finishing in front of Arnis Rumbenieks.

During 2019 World Athletics Championships he competed in 20km distance and finished in 11th place.

[citation needed] From 1 June 2020 to 30 November 2020 Žiūkas is appointed as a head of Seimas functional office.

[2] This biographical article relating to Lithuanian athletics is a stub.