Iwaki (岩城、磐城) may refer to:

Places

• Iwaki, Fukushima (いわき市), a city in Japan
• Iwaki, Akita (岩城町), a former town in Japan
• Iwaki, Aomori (岩木町), a former town in Japan
• Iwaki Province (718) (岩城国), an old province of Japan established in 718 and dissolved by 724
• Iwaki Province (1868) (磐城国), an old province of Japan established in 1868
• Iwaki River (岩木川), a river in Aomori Prefecture, Japan
• Mount Iwaki (岩木山), a volcano on the Japanese island of Honshū

Surname

• Iwaki clan: a Japanese clan that ruled the Hamadōri area
• Hiroyuki Iwaki (岩城 宏之, 1932–2006), Japanese conductor and percussionist
• Kōichi Iwaki (岩城 滉一, born 1951), Japanese actor
• Mitsuhide Iwaki (岩城 光英, born 1949), Japanese politician of the Liberal Democratic Party
• Nobuko Iwaki (井脇 ノブ子, born 1946), Japanese politician of the Liberal Democratic Party
• Mirai Iwaki (岩城 未来), a fictional character in the manga Guru Guru Pon-chan

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