Masakazu is a masculine Japanese given name. Notable people with the name include:
*Imafuku Masakazu (died 1582), Japanese samurai of the Sengoku period who served the Takeda clan
*Kobori Masakazu (1579–1647), artist and aristocrat in the reign of Tokugawa Ieyasu
*Masakazu Fujiwara (born 1981), Japanese long-distance runner who specializes in the marathon
*Masakazu Fukuda (1972–2000), Japanese professional wrestler
*Masakazu Imanari (born 1976), Japanese mixed martial arts fighter best known for his leglocks
*, Japanese cyclist
*Masakazu Kagiyama (born 1971), Japanese figure skater who is now a coach
*Masakazu Katsura (born 1962), Japanese manga artist
*Masakazu Kawabe (1886–1965), general in the Imperial Japanese Army
*Masakazu Koda (born 1969), former Japanese football player
*Masakazu Kondō, Japanese shogi player
*Masakazu Konishi (1933–2020), Japanese biologist
*Masakazu Morita (born 1972), Japanese voice actor and actor
*Masakazu Nakai (1900–1952), Japanese aesthetician, film theorist, librarian, and social activist
*, Japanese anime director
*Masakazu Sekiguchi (born 1953), Japanese politician of the Liberal Democratic Party
*Shinagawa Masakazu (1544–1565), Japanese samurai of the Sengoku period who served the Mōri clan
*Masakazu Suzuki, retired Japanese football player and manager
*Masakazu Tamura (born 1943), Japanese film and theatre actor
*Masakazu Tashiro (born 1988), Japanese football player
*Masakazu Yoshizawa (1950–2007), Japanese American flautist and musician, known for his mastery of the shakuhachi
* Masakazu Watanabe, Japanese shogi player
*, Japanese manga artist
*, Japanese writer, literary critic and philosopher
{{given name
Japanese masculine given names
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