HKT48 has had a total of 76 original members over their 5 generations (not including Draft, Kennin and transferred members) and a total of 88 members. As of March, HKT48 has 37 active members, 14 Kenkyuusei and 2 members in IZ*ONE.
Like in AKB48, regular auditions to recruit new members are held, and the future successful candidates, the Kenkyuusei Members (Research Students), take part of a in-training team of members that work as sub and under for the official members in various activities (mostly the Theater Performances). And then, when any of the official members graduate, a girl is promoted to fill the space.
Besides the regular auditions, HKT48 also participates on the AKB48 Group Draft Kaigi to recruit new members. Currently all the generations have at least one member in the group, except the first generation of Draft members.
HKT48 Kenkyuusei (1st Gen - 5th Gen)
- Bolded names indicate members, which are still active in HKT48 or one of the sister groups.
- Italicized names indicate members with pending graduations.
- The members' pictures are of members who are still active in HKT48 and are listed in accordance to the alphabetical order of members in each generation.
- Announced July 10, 2011.
- 16 members formed Team H on March 4, 2012. 8 members formed Team KIV on January 11, 2014.
Members (21): Anai Chihiro, Abe Kyoka, Imada Mina, Ueki Nao, Eto Sayaka, Kumazawa Serina, Kodama Haruka, Komori Yui, Shimono Yuki, Sugamoto Yuko, Tanaka Natsumi, Taniguchi Airi, Nakanishi Ayaka, Nakanishi Chiyori, Fukagawa Maiko, Matsuoka Natsumi, Miyawaki Sakura, Murashige Anna, Motomura Aoi, Moriyasu Madoka, Wakatabe Haruka
- Now in Team H (1): Matsuoka Natsumi
- Now in Team KIV (6): Imada Mina, Kumazawa Serina, Shimono Yuki, Murashige Anna, Motomura Aoi, Moriyasu Madoka
- Now in AKB48 (1): Nakanishi Chiyori
- Now in IZ*ONE (1): Miyawaki Sakura
- Now Graduated (9): Komori Yui, Sugamoto Yuko, Taniguchi Airi, Anai Chihiro, Wakatabe Haruka, Kodama Haruka, Ueki Nao, Tanaka Natsumi, Fukagawa Maiko
- Former Kenkyuusei (3): Eto Sayaka, Nakanishi Ayaka, Abe Kyoka
- Announced in September 23, 2012.
- 7 members formed Team KIV on January 11, 2014.
Members (21): Akiyoshi Yuka, Ito Raira, Inoue Yuriya, Iwahana Shino, Ui Mashiro, Ueno Haruka, Umemoto Izumi, Okada Kanna, Okamoto Naoko, Kusaba Manami, Kojina Yui, Goto Izumi, Komada Hiroka, Sakaguchi Riko, Tashima Meru, Tanaka Yuka, Tani Marika, Tomiyoshi Asuka, Tomonaga Mio, Fuchigami Mai, Yamada Marina
- Now in Team H (5): Akiyoshi Yuka, Ueno Haruka, Kojina Yui, Sakaguchi Riko, Tashima Meru
- Now in Team KIV (1): Fuchigami Mai
- Now in SKE48 (1): Tani Marika
- Now Graduated (14): Kusaba Manami, Goto Izumi, Umemoto Izumi, Ito Raira, Okada Kanna, Okamoto Naoko, Inoue Yuriya, Tanaka Yuka, Ui Mashiro, Yamada Marina, Tomiyoshi Asuka, Komada Hiroka, Iwahana Shino, Tomonaga Mio
- Announced November 2, 2013.
- 7 members formed Team TII on March 30, 2016.
- Now in Team H (1): Tanaka Miku
- Now in Team TII (6): Aramaki Misaki, Kurihara Sae, Sakamoto Erena, Hokazono Hazuki, Yamauchi Yuna, Yamashita Emiri
- Now in IZ*ONE (1): Yabuki Nako
- Now Graduated (1): Tsutsui Riko
- Announced July 12, 2016
- Now in Team H (1): Toyonaga Aki
- Now in Team KIV (2): Unjo Hirona, Jitoe Nene
- Now in Team TII (6): Oda Ayaka, Sakai Moeka, Shimizu Rio, Takeda Tomoka, Matsumoto Hinata, Miyazaki Sono
- Now Graduated (1): Tsukiashi Amane
- Former Kenkyuusei (1): Otoshima Risa
- Announced November 26, 2018
Members (14): Ishibashi Ibuki, Ichimura Airi, Ogawa Sana, Kamijima Kaede, Kawahira Hijiri, Kudo Haruka, Kuriyama Rina, Goto Hinano, Sakamoto Rino, Takemoto Kurumi, Tanaka Iori, Nagano Miyabi, Mizukami Rimika, Murakami Wakana
- Still part of Team Kenkyuusei (14): Ishibashi Ibuki, Ichimura Airi, Ogawa Sana, Kamijima Kaede, Kawahira Hijiri, Kudo Haruka, Kuriyama Rina, Goto Hinano, Sakamoto Rino, Takemoto Kurumi, Tanaka Iori, Nagano Miyabi, Mizukami Rimika, Murakami Wakana
- Announced November 10, 2013
Members (1): Yamamoto Mao
- Now Graduated (1): Yamamoto Mao
- Announced May 10, 2015.
- 3 members formed Team TII on March 30, 2016. Before this, all of them had gotten picked to either Team H or Team KIV but they weren't bound/promoted to this team, acting like a normal Kenkyuusei.
- Announced January 21, 2018
- Now in Team H (2): Ito Yueru, Watanabe Akari
- Now in Team KIV (1): Baba Sayaka
- Now in Team TII (1): Seki Ai
- Now Graduated (1): Matsuda Yumi
- Announced June 16, 2012
Members (1): Sashihara Rino
- Now Graduated (1): Sashihara Rino
- Sashihara Rino is often considered a HKT48 1st generation member, along with Ota Aika, both promoted to Team H.
Members (1): Ota Aika
- Announced August 24, 2012.
- 1 member formed Team KIV on January 11, 2014.
- Now graduated (1): Ota Aika
- Ota Aika is often considered a HKT48 1st generation member, along with Sashihara Rino, both promoted to Team H.
- Announced February 24, 2014
Members (1): Kimoto Kanon
- Concurrency Ended (1): Kimoto Kanon