Name: Abe Natsumi (安倍なつみ)

| Nickname: Nacchi, Nacci Nachimi
| Birthdate: 1981-08-10
| Birthplace: Muroran, Hokkaido, Japan
| Blood type: A
| Height: 152 cm (4′11.8″)
| Hobbies: Looking at different fashions
| Favorite words: Freedom, life, love, heart
| Favorite colors: Baby pink, Blue, sparkling colors
| Favorite flowers: Sunflowers, gerberas, cherry blossoms
| Favorite season: Autumn
| Favorite food: Sushi
| Disliked food: Cilantro, pickles, wasabi
| Favorite song: 22sai no Watashi
| Hello! Project Groups: Morning Musume (1997–2004), Nochiura Natsumi (2004–2005), DEF.DIVA (2005–2006), Morning Musume Tanjou 10nen Kinentai (2007)
| Subgroups: Morning Musume Sakura Gumi (2003–2004)
| Concert Units: Elder Club (2006–)
| Shuffle Units: 2000: Kiiro 5, 2001: 10nin Matsuri, 2002: Odoru 11, 2003: SALT5, 2004: H.P. All Stars

Abe Natsumi (安倍なつみ) was an original member of Morning Musume. She graduated Morning Musume in 2004, and is currently a soloist within Hello! Project. She will graduate from H!P with the rest of Elder Club on March 31, 2009; she will remain a part of Up-Front Agency.