Hiroko Sato is a Japanese former long-distance runner who specialized in the marathon.
Sato competed primarily in the 1990s and early 2000s. She is best known for winning the 1998 Nagoya International Women's Marathon with a time of 2:29:45. This victory secured her place on the Japanese team for the 1998 Bangkok Asian Games, where she also competed in the marathon.
While her career spanned several years, her victory in Nagoya remains her most significant achievement. Information regarding specific race results beyond the Nagoya Marathon and Asian Games is limited.