Rudolf Lubinski (also spelled Lubynski; October 31, 1873 – March 27, 1935) was a Croatian architect.

After his education, he worked in the architectural studio of Josef Durm, participating in the city projects of Offenburg, Cologne, Karlsruhe and Freiburg.

Lubinski has participated in developing the project for the Heidelberg University Library, which came as a particularly good experience gained in the later work in Zagreb.

He has designed numerous residential houses in Nazorova, Petrinjska and Masarykova street.

From 1911 until 1913, Lubinski worked on his biggest building project, the National and University Library on Marulić Square in Zagreb.