Ibaraki or Ibaragi () is a Japanese surname. Notable people with the surname include:
Mitsuba Ibaraki (born 1988), Japanese footballer Noriko Ibaragi (, 1926–2006), Japanese writer Stephen Ibaraki, Canadian information technology professional Toshihide Ibaraki (, born 1940), Japanese computer scientist
Fictional characters Kasen Ibaraki, a character in Wild and Horned Hermit from the video game franchise Touhou Project Takeru Ibaraki, a protagonist in the manga Wichblade Takeru See also Ibaraki Prefecture Ibaraki (disambiguation)