Slavko Kodrnja (1911–1970) was a footballer who played as a forward.^[2] Internationally, he played for Yugoslavia and the Independent State of Croatia.

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In the 1940–41 season of the Portuguese league, he was the top scorer, tied with Fernando Peyroteo. He won the 1942 Croatian championship with Concordia Zagreb.

Kodrnja made his debut for Yugoslavia during the 1933 Balkan Cup match against Greece, immediately scoring a hat-trick. He made a total of four appearances for Yugoslavia, and also scored four goals. However, with the establishment of the Independent State of Croatia, a World War II-era puppet state of Nazi Germany, he began playing for the Croatia national team in 1942. His final international was an April 1943 friendly match against Slovakia.^[3]