Hubert Oswald Stier (27 March 1838 in Berlin – 25 June 1907 in Hannover) was a German architect and university lecturer.
He built mainly train stations, museums, and churches primarily in the Neo-Renaissance style.
From 1876 he worked as a departmental architect of Hannover railways, where he was appointed as head of the project to build a new central station.
Stier's project combined Berlin and Hanover arc styles, along with original his own ideas.
In 1895 Hubert Stier also won the competition for the New Town Hall in Hanover, which eventually failed to run according to its design.