- Affectionate Nickname: Chihiron, Cap, Chiichan
- Ascended Extra: First ranked in the 2014 elections at #39, making it to Next Girls' center the following year.
- Ill Girl: A former one: she was born with a congenital disease, but she recovered from it.
Akiyoshi YukaBorn on October 24, 2000 in Fukuoka Prefecture
- Affectionate Nickname: Yukachan
- Big Bad: Of the HKT Majisuka Gakuen skits during their 2014 spring concert tour.
- Running Gag: Other members say she resembles an onigiri.
- Trademark Favorite Food: Oranges.
Inoue YuriyaBorn on June 15, 1999 in Fukuoka Prefecture
- Affectionate Nickname: Yuriya
- Animal-Eared Headband: Loves cats so much that she will often wear cat ears or other cat-inspired clothing.
- Fangirl: Of SKE's Kitagawa Ryoha. Bordering obsession.
- Kind Hearted Cat Lover
Ui MashiroBorn on January 31, 2000 in Fukuoka Prefecture
Ueno HarukaBorn on September 20, 1999 in Fukuoka Prefecture
Umemoto IzumiBorn on May 15, 1997 in Fukuoka Prefecture
Okamoto NaokoBorn on April 4, 1996 in Fukuoka Prefecture
- Affectionate Nickname: Naopon
Kojina YuiBorn on January 24, 1998 in Fukuoka Prefecture
Kodama HarukaBorn on September 19, 1996 in Fukuoka PrefectureWas also a concurrent member with AKB48's Team A. Since the 2014 shuffle, is now concurrent with AKBís Team K. Center of HKT from its formation to 2013, taking back the center position in late 2014.
- Affectionate Nickname: Haruppi, Harupyo, Pipi-chan
- Ascended Extra: Ranked 37th during the 5th Sousenkyo from not ranked, as well as being featured in "Sayonara Crawl". She was also the first HKT member to be featured in an AKB single (in "Manatsu no Sounds Good!") In the 2015 elections she made it to Undergirls' center.
- Demoted to Extra: She was the former center of HKT, but later the management gave that position to Tashima Meru, a kenkyuusei at the time.
- Determinator: Haruppi worked very hard to get back the center position, and finally made it in 2014, centering the single "Hikamae no I Love You!".
- Forehead of Doom: Her charm point.
- New Transfer Student: Currently a concurrent member with AKB48's Team K.
- Speech Impediment: Her lisp makes her quite adorable though.
Komada HirokaBorn on November 21, 1996 in Miyazaki
Sakaguchi RikoBorn on July 26, 1994 in Fukuoka Prefecture
- Affectionate Nickname: Rikopi
Sashihara RinoBorn on 21 November 1992 in Oita Prefecture.Is also the group's theater manager.Was moved here from AKB48 in June 2012 following a scandal.Has released two solo singles. Topped the elections in 2013 and 2015.Sub units she's been in are:
- Not Yet
- Affectionate Nickname: Sasshi, Sashiko.
- Christmas Cake: She's HKT's oldest member... at only 22 years old. Most members are middle school/high school girls.
- Cool Big Sis: Serves as a mentor to her fellow HKT group mates.
- Image Song: 'Koi suru Fortune Cookie', the song she got to be the center in after winning the 2013 General Election.
- Otaku Surrogate: A huge idol fangirl. She's into wotagei (the style of chants that wotas, Otaku of idols do at concerts).
- And since she's become HKT's theater manager, she creates set lists for the group for concerts. These tend to include Cover Versions of songs from other idol groups.
- Parental Favoritism: AKB's manager has stated several times that she's currently his favourite member. Whether this helped to increase her popularity or not is unknown.
- Spotlight-Stealing Squad: Won the 2013 AKB group General Election. She did it again in 2015, taking the position from AKB's ace Watanabe Mayu.
- The Prankster
- Trickster Mentor
Tashima MeruBorn on January 7, 2000 in Fukuoka PrefectureCenter of HKT48.Sub-unit(s) shes been in are:
- Tentoumu Chu!
- The Ace: Of HKT's second generation.
- Affectionate Nickname: Meru
- Ascended Extra: One of the only a few fresh Kenkyuusei that has ranked in the Sousenkyo. She ranked 55th in the 5th one, and she's made it to Undergirls since then. Plus, she was made HKT's center before being promoted, and carried the position until the release of "Hikamae no I Love You!"
- Parental Favoritism: Aki-P (AKB's manager) has proclaimed her as the 'New Jurina'.
Tanaka NatsumiBorn on August 10, 2000 in Fukuoka Prefecture.Held a concurrent position with SKE's Team S from 2014 to 2015.
- Affectionate Nickname: Natsumikan, Boss
- New Transfer Student: To SKE
- Informed Flaw: Has a complex about her height.
Tanaka MikuBorn on September 12, 2001 in Kumamoto
- Affectionate Nickname: Mikurin
Matsuoka NatsumiBorn on August 8, 1996 in Fukuoka Prefecture.Was named co-captain of Team H in the 2014 shuffle.
- Affectionate Nickname: Natsu
Yabuki NakoBorn on June 18, 2001 in Tokyo
- Affectionate Nickname: Nako
- Adorably Precocious Child: Twelve years old, tiny, and centered a coupling song less than one month after debuting.
- Ascended Extra: Centered HKT's coupling song for "Suzukake Nanchara", "Wink wa Sankai" and has already made it into the senbatsu for the group's third single.
- Pint-Sized Powerhouse: The ace of the third generation and currently the shortest girl in all of the 48 groups at a whopping 138cm (4'6'')
Yamada MarinaBorn on March 24, 1995 in Fukuoka Prefecture
- Affectionate Nickname: Mariri
Yamamoto MaoBorn on September 18, 1996 in Fukuoka.Team Hís first and only choice in the 2013 draft.
- Affectionate Nickname: Maopani
Wakatabe HarukaBorn on September 26, 1998 in Fukuoka Prefecture
- Affectionate Nickname: Wakaharu