Mackenyu (新田 真剣佑, born November 16, 1996) is a Japanese actor born in Los Angeles, California. He is the son of actor and martial artist Sonny Chiba. He attended Beverly Hills High School in their Advanced Placement Program and appeared in a few films and TV shows while growing up. As a young child, Mackenyu had many interests including horseback riding, Yabusame, Kyokushin Karate (he was placed third at the US Kyokushin Karate Nationals), gymnastics, water polo, and wrestling (for which he became the school representative). He was also into music, playing piano since he was 10 years old, and later participated in the brass band of his high school in Beverly Hills, playing saxophone, and flute.

At the age of 15, Mackenyu watched a movie of Haruma Miura and got inspired to pursue acting professionally in Japan. He held on to the dream of co-starring with the actor once he established his career, which then came true in the movie adaptation of Gunjō Senki (2021). Mackenyu landed his first feature film lead role in Take a Chance (2015) and was featured in the acclaimed short movie Tadaima (2015) for which he won a best supporting actor award at the Asians of Films festival. He moved to Japan later in the same year.

His fame grew in Japan after landing the role of Eiji Tomari in Kamen Rider Drive: Surprise Future (2015). In 2016, he made his stage debut in the Japanese musical Boys Over Flower (Hana Yori Dango: The Musical), which prepared him for his future major roles in the stage-musicals ZEROTOPIA (2018) and Hoshi no Daichi ni Furu Namida (2020). He had a prominent role in the two part feature film Chihayafuru Part I & II (2016) which made him a big name in Japan. Mackenyu started to expand his acting opportunities in Hollywood with a supporting role in the film Pacific Rim: Uprising (2018). In 2021, he starred as the final villain, Yukishiro Enishi, in the Rurouni Kenshin series. He portrayed Scar in the live-action sequel of Fullmetal Alchemist (2022). He gained global popularity when he landed the role of Roronoa Zoro in the live-action series adaptation of One Piece (2023). Drawing on his martial arts background, Mackenyu performs his own stunts and is highly skilled in sword fighting.

真剑佑（ 真剣佑），1996年11月16日出生于美国洛杉矶，日本男演员，千叶真一的儿子，目前作为演员活跃在电视领域。 2014年，出演日剧SP《世界奇妙物语2014年秋之特别篇》。2015年，主演漫画改编的真人版电影《花牌情缘》上下篇 。2016年出演热血校园剧《敬仰吾师》，饰演木藤良莲。2017年，5月从父亲所属的个人事务所转到新事务所topcoat，并改名为新田真剑佑；出演漫改电影《JOJO的奇妙冒险：不灭钻石第一章》、励志青春电影《Cheer☆Dance~女高中生用啦啦队舞蹈征服全美的真实故事~》和羽住英一郎导演最新作《OVER DRIVE》；参演新剧《是我们干的（仆たちがやりました）》。

Mackenyu Maeda (前田 真剣佑 Maeda, Mackenyu?) (Los Ángeles, California, 16 de noviembre de 1996), conocido como Mackenyu, es un actor japonés. Es conocido por su participación en producciones como Over Drive (2018), Samurai X: El fin, y One Piece (2023).