Japanese people in South Korea (Japanese: 在韓日本人, Hepburn: Zaikan Nihonjin) (Korean: 재한일본인; RR: Jaehan Ilbonin) are people of Japanese ethnicity residing or living in South Korea. They are usually categorized into two categories: those who retain Japanese nationality and are present in South Korea , and those who changed their nationality to South Korean (일본계 한국인, "Ilbongye Hangugin").^{[citation needed]}

The history of Japanese Koreans are usually divided into two different time periods.

During Japanese rule in Korea, the peak of the Japanese population was 752,823, circa 1942.^[2]

• Hosaka Yuji [ko; ja] (Originally from Tokyo, Japan)

• Ryohei Otani (Originally from Suita, Osaka, Japan)
• Sayuri Fujita (Originally from Shibuya-ku, Tokyo, Japan)

• Takuya Terada, former member of Cross Gene (Originally from Moriya, Ibaraki, Japan)
• Kangnam, former member of M.I.B. (Originally from Tokyo, Japan)
• Momo Hirai, Mina Myoui and Sana Minatozaki, members of Twice (Momo Hirai: Originally from Kyotanabe, Kyoto, Japan/Mina Myoui: Born in San Antonio, Texas, United States but raised in Nishinomiya, Hyōgo, Japan/Sana Minatozaki: Originally from Tennōji-ku, Osaka, Japan)
• Yuta Nakamoto and Shotaro Osaki, members of NCT (Yuta Nakamoto: Originally from Kadoma, Osaka, Japan/Shotaro Osaki: Originally from Zama, Kanagawa, Japan^[3])
• Yuto Adachi, member of Pentagon (Originally from Nagano, Nagano, Japan)
• Nako Yabuki, former member of Iz*One (Originally from Tokyo, Japan)
• Sakura Miyawaki, member of Le Sserafim and former member of Iz*One (Originally from Kagoshima, Kagoshima, Japan)
• Nakamura Kazuha (Kazuha), member of Le Sserafim (Born in Kōchi, Kōchi, Japan but raised in Osaka, Japan)
• Miyu Takeuchi, former member of Japanese girl group AKB48 (Originally from Tokyo, Japan)
• Kwon Ri-se, former member of Ladies' Code (Originally from Fukushima, Japan)
• Kokoro Kato (Kokoro), Rise Katsuno (Remi), and Mao Hirokawa (May), members of Cherry Bullet (Kokoro Kato (Kokoro): Originally from Nagoya, Aichi, Japan/Rise Katsuno (Remi) and Mao Hirokawa (May): Originally from Tokyo, Japan)
• Juri Takahashi, member of Rocket Punch and former member of AKB48 (Originally from Kashima, Ibaraki, Japan)
• Kenta Takada, member of JBJ95 and former member of JBJ (Originally from Takasaki, Gunma, Japan)
• Yoshinori Kanemoto (Yoshi), Mashiho Takata, Asahi Hamada, and Haruto Watanabe, members of Treasure (Yoshinori Kanemoto (Yoshi): Originally from Kobe, Hyōgo, Japan/Mashiho Takata: Originally from Mie, Japan/Asahi Hamada: Originally from Osaka, Japan/Haruto Watanabe: Originally from Fukuoka, Japan)
• Sora Sakata, member of Woo!ah! (Originally from Fukuoka, Japan)
• Riki Nishimura (Ni-ki), member of Enhypen (Originally from Okayama, Japan)
• Koyuki Mori (Yuki), member of Purple Kiss (Originally from Tokyo, Japan)
• Hina Nagai, member of Lightsum (Born in Kanagawa, Japan but raised in Tokyo, Japan)
• Sumire Aoyagi (Mire), member of Tri.be (Originally from Tokyo, Japan)
• Ogawa Mizuki (Léa), member of Secret Number (Originally from Tokyo, Japan)
• Terazono Keita, member of Ciipher (Originally from Osaka, Japan)
• Haruka Miyauchi (Miya), member of GWSN (Originally from Shizuoka, Japan)
• Amanuma Yuku, member of DKB (Originally from Saitama, Japan)
• Mizuguchi Yuto (U), member of ONF (Originally from Osaka, Japan)
• Tokunaga Yuuri, member of Lunarsolar (Originally from Fukuoka, Japan)
• Haku Shota (Soul), member of P1Harmony (Originally from Saitama, Saitama, Japan)
• Hayase Leo, Nasukawa Shota (Zero), Imai Kairi and Udo Musashi (Kio), members of T1419 (Hayase Leo, Nasukawa Shota (Zero) and Imai Kairi: Originally from Osaka, Japan/Udo Musashi (Kio): Originally from Kōchi, Kōchi, Japan)
• Rui Watanabe, model and former member of K-Pop Girl Group H.U.B.
• Rei Naoi, member of Ive (Originally from Anan, Tokushima, Japan)
• Nonaka Shana, member of Lapillus (Originally from Kōchi, Kōchi, Japan)

• Kiggen
• Keisuke Kunimoto (Originally from Yokohama, Kanagawa, Japan)
• Lee Eun-ju (Originally from Shimonoseki, Yamaguchi, Japan)
• Shoo (Originally from Yokohama, Kanagawa, Japan)
• Woo Jang-choon (Originally from Akasaka, Minato-ku, Tokyo, Japan)
• Crown Princess Yi Bangja (Originally from Tokyo, Japan)
• Prince Yi Gu (Originally from Tokyo, Japan)

• Busan Japanese School
• Japanese School in Seoul
• Zainichi Koreans