Ilona Ács

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Ilona Ács (later Zimmermann) (April 18, 1920 – November 23, 1976) was a Hungarian freestyle swimmer. Born in Budapest, she competed in the 1936 Summer Olympics. She helped Hungary finish fourth in the 4 × 100 metre freestyle relay and competed in the 100 metre freestyle, where she was eliminated in the first round. She died in Budapest.