Miyoshi (written: 三好, 三善 or 三吉) is a Japanese surname. Notable people with the surname include:
Akira Miyoshi (三善 晃, born 1933), Japanese composer
Erika Miyoshi (三好 絵梨香, born 1984), Japanese pop singer
Kiyotaka Miyoshi (三吉 聖王, born 1985), Japanese footballer
Miyoshi Kiyotsura (三善 清行, 847–918), Japanese Confucianist
Kōzō Miyoshi (三好 耕三, born 1947), Japanese photographer
Mark Miyoshi, Japanese-American musical instrument maker
Miyoshi Masanaga (三好 政長, 1508–1549), Japanese samurai and daimyō
Masao Miyoshi (三好 将夫, 1928–2009), Japanese sociologist
Miyoshi Nagayoshi (三好 長慶, 1522–1564), Japanese samurai and daimyō
Shinrokuro Miyoshi (三好 晋六郎, 1856–1910), Japanese shipbuilding academic
Takuji Miyoshi (三好 拓児, born 1978), Japanese footballer
Tatsuji Miyoshi (三好 達治, 1900–1964), Japanese poet, literary critic, and literary editor
Tomohiro Miyoshi (三好 智弘, born 1970), Japanese swimmer
Miyoshi Yoshikata (三好 義賢, c. 1527 – 1562), Japanese samurai
Miyoshi Yoshitsugu (三好 義継, 1549–1573), Japanese samurai and daimyō
