Ilija Arnautovic (1924 - 23rd January, 2009) was a Slovenian architect of Serbian descent. He was a student of Edvard Ravnikar in Ljubljana. He is known for many projects during the Slovenian socialism (1960-1981). His works include the design and construction of housing in Ljubljana (Ljubljana Exhibition hall, skyscrapers at Linhartova cesta and Savsko naselje in Ljubljana, neighborhood in Bezigrad Ljubljana BS3).