Lajos Walko (30 October 1880 – 10 January 1954) was a Hungarian politician, who served as Minister of Foreign Affairs between 1925 and 1930. Around eight months later, he was also appointed to this position. He worked for the Ministry of Finance. He served as interim Minister of Finance twice and Minister of Trade. As foreign minister he carried a considerable role the Horthy system happened to an external loan in his financial stabilisation. From 1938 he was the president of the Hungarian Commercial Bank in Budapest.