Masahiro Miki (Japanese: 三木正浩; born 26 July 1955) is a Japanese billionaire businessman, and the founder and largest shareholder of Tokyo-based shoemaker ABC-Mart.

[2] In 1985, Miki founded shoe and apparel company Kokusai Boeki Shoji.

As of November 2025, Miki has an estimated net worth of $3.9 billion.

[4] In addition to his business, Miki is also a successful racehorse owner, who owns several notable horses including Justin Milano (2024 Satsuki Shō) and Justin Palace [ja] (2024 Spring Tenno Sho).

This Japanese business–related biographical article is a stub.