- Name: Ogata Haruna (尾形春水)
- Nickname: Haachin (はーちん), Ogata-chan (尾形ちゃん), Daisaku (ダイサク)
- Birthday: February 15, 1999
- Birthplace: Osaka, Japan
- Blood Type: A
- Height: 157cm
- Hobbies: Video editing
- Specialty: Figure skating
- Favorite Food: Ice, tsumami
- Least Favorite Food: Spicy foods
- Favorite Color: Blue
- Favorite Subject: Bible studies, art
- Looks Up To: Sayashi Riho
- Hello! Project groups:
- Morning Musume (2014–)
Ogata Haruna was selected from Morning Musume's 12th Generation "Golden Audition" to join the group on September 30, 2014, along with Nonaka Miki and former Hello! Pro Kenshuusei members Makino Maria and Haga Akane.
On October 26, 2016 Haruna announced through her blog that she had been appointed to the position of assistant to the head manager of the Hello! Project mobile app in the PR department of the company.
- [2015.06.xx] Greeting ~Ogata Haruna~ (Greeting~尾形 春水~)
- [2016.05.21] Ogata Haruna Mini Photobook "Greeting -Photobook-" (尾形春水ミニ写真集「Greeting-Photobook-」)
- [2016.12.12] Morning Musume 12th Generation Official Book (モーニング娘。12期 オフィシャルブック)
- TV Programs
-  TRIANGLE -Trine Angle- (TRIANGLE -トラインアングル-)
-  Zoku 11-nin Iru! Higashi no Chihei, Nishi no Towa (続・11人いる!東の地平・西の永遠)
-  Pharaoh no Haka (ファラオの墓)
- [2015–2017] Morning Musume '15 12ki Nikki (モーニング娘。'15 12期日記)
- [2016–] HELLO! DRIVE! (HELLO! DRIVE! -ハロドラ-)
- [2017–] Morning Musume '17 no Morning Diary (モーニング娘。'17のモーニングダイアリー)
- [2017–] marukome Morning Misoshiru Nomou yo! (marukome モーニングみそ汁 飲もうよ!)
- Was a figure skater between 5 and 14 years old.
- Her special skating skill is a double axel with two and a half rotations.
- Competed in skating competitions before joining Morning Musume.
- Is the first Morning Musume member from Osaka.
- Her favorite Hello! Project songs are "What is LOVE?" by Morning Musume and "Yattaruchan" by ANGERME.
- Thinks her charm points are her white skin and brown eyes.
- Said the thing she wants to do most as part of Morning Musume is have a funny face competition with Suzuki Kanon.
- Before debut the song she wanted to dance the most with Morning Musume was "TIKI BUN".
- Likes comedy television shows, like "Shabekuri007" and "King of Conte".
- Eats ice before going to bed.
- Became a fan of Morning Musume after being shown the PV for "Maji Desu ka Ska!" by a friend.
- Favorite phrase is "God doesn't give you more than you can overcome."
- Her favorite genres of music are pop, idol ballads, and Christmas music.