|Date of birth||17 February 1895|
|Place of birth||Grubišno Polje, Austria-Hungary|
|Date of death||1 July 1983(aged 87)|
|Place of death||Zagreb, SFR Yugoslavia|
|1913 - 1920||Rapid Vienna||68||(1)|
|1920 - 1923||Građanski Zagreb|
|1920-1924||Kingdom of SCS||9||(0)|
* Senior club appearances and goals counted for the domestic league only.
Rudolf Rupec (17 February 1895 in Grubišno polje, Kingdom of Croatia-Slavonia, Austria-Hungary – 1 July 1983 in Zagreb) was a Croatian footballer who played for the national teams of Austria and the Kingdom of Serbs, Croats and Slovenes.
He began is career at SK Rapid Wien in 1911 and from 1913 to 1920 was on the club's first squad. During the waning years of the Austro-Hungarian Empire Rupec played ten matches for the Austrian national team. In 1920 he joined a top Croatian side HŠK Građanski Zagreb. He played with the club until the end of his career in 1928. With the club he won the national championship of the Kingdom of Serbs, Croats and Slovenes in 1923 and 1926. He later coached HAŠK Zagreb to the national championship in 1938. Rupec was part of the Kingdom's first national team, and had 9 caps.
He died in the summer of 1983 at the age of 87 in Zagreb.