Klawdziy Duzh-Dushewski, Belarusian-Lithuanian architect, journalist, and diplomat, created the Flag of Belarus (d. 1959)

Klawdziy Stsyapanavich Duzh-Dushewski (Belarusian: Клаўдзій Сцяпанавіч Дуж-Душэўскі, Lithuanian: Klaudijus Dušauskas-Duž; 27 March 1891 – 25 February 1959) was a Belarusian civil engineer, architect, diplomat and journalist. He is believed to be the creator of the Flag of Belarus in 1917.