- Name: Ogawa Saki (小川紗季)
- Nicknames: Sakitty (サキチィ)
- Birthday: November 18, 1996
- Birthplace: Saitama, Japan
- Blood type: A
- Height: 153 cm
- Dislikes: Physical activity
- Favorite Food: Melons
- Least Favorite Food: Meat, milk
- Specialty: Baton
- Looks Up To: Tanaka Reina
- Hello! Project groups:
- Oha Girl Maple (2010–2011)
In 2009, she was chosen as a member of new group S/mileage along with Hello! Pro Eggs Wada Ayaka, Maeda Yuuka, and Fukuda Kanon. Later that year, she was also added to the lineup of the ZYX revival unit, ZYX-a.
On August 23, 2011, it was announced that Ogawa would be graduating from S/mileage and Hello! Project on August 27, 2011, after their concert in Nagoya. Uchouten LOVE was her last single with the group, and the last single that the group would perform as a 4-member unit. It was stated that Ogawa wished to return to the life of a normal schoolgirl.
- TV Programs
-  Zombie Daisuki (ぞんびだいすき) (Nintendo DS)
- [2007.06.29] Mottainai Baasan Ondo (もったいないばあさん音頭) (with Okai Asuna)
- [2010.11.24] My School March (マイ・スクール・マーチ) (as Oha Girl Maple)
- [2007.02.10] Country Musume LIVE2006 ~Shibuya des Date~ (カントリー娘。LIVE2006～Shibuya des Date～)
- [2007.09.22] Hello! Pro Egg Delivery Station! 01 (with Kikkawa Yuu, Mori Saki, Kitahara Sayaka, Aoki Erina) (ハロプロエッグデリバリーステーション！01)
- [2007.11.21] C-ute Cutie Circuit 2007 ~MAGICAL CUTIE TOUR~
- [2005.12.??] 34 Choume no Kiseki (34丁目の奇跡)
- During the 2008 Hello! Project summer tour, Ogawa was selected to peform Matsuura Aya's Hajimete Kuchibiru wo Kasaneta Yoru along with Morning Musume member LinLin and C-ute member Suzuki Airi. She was the only Egg in this concert to be featured in a main performance with two main Hello! Project members.
- Eats bread for breakfast.
- Has a habit of biting her under-lip.
- Her favorite spot is the living room.