Saginomiya may refer to the family of Isumi Saginomiya:
- Isumi Saginomiya, Nagi's friend.
- Hatsuho Saginomiya, Isumi's mother also daughter of Kokonoe and granddaughter of Ginka, who is a friend of Yukariko and Mikoto.
- Kokonoe Saginomiya, Isumi's grandmother also mother of Hatsuho and daughter of Ginka.
- Ginka Saginomiya, Isumi's great-grandmother also mother of Kokonoe and grandmother of Hatsuho.
Other known Saginomiyas:
- There is currently no Saginomiya person other than Isumi's family.