Matsumoto Hakuō I (初代 松本 白鸚, Shodai Matsumoto Hakuō, 7 July 1910 – 11 January 1982), born Junjirō Fujima (藤間 順次郎, Fujima Junjirō), was a Japanese kabuki actor, regarded as the leading tachiyaku (specialist in male roles) of the postwar decades; he also performed in a number of non-kabuki venues, including Western theatre and films.

Like most kabuki actors, Hakuō had a number of stage names (gō) over the course of his career.

The son of Matsumoto Kōshirō VII and son-in-law of Nakamura Kichiemon I, the man who would later be called Hakuō was born into the kabuki world, and grew up in it.

His brothers, Ichikawa Danjūrō XI and Onoe Shōroku II, were actors, as are his sons, Nakamura Kichiemon II and Matsumoto Kōshirō IX, and his grandson Ichikawa Somegorō VII (currently known as Matsumoto Kōshirō X).

Kôshirō was named a Living National Treasure in 1975, a rare and very illustrious honor awarded in Japan to those who embody, promote, and preserve traditional culture.