Mamoru Oshii (押井 守 , Oshii Mamoru, born 8 August 1951) is a Japanese filmmaker, television director and writer.
Famous for his philosophy-oriented storytelling, Oshii has directed a number of acclaimed anime films, including Urusei Yatsura 2: Beautiful Dreamer (1984), Angel's Egg (1985), Patlabor 2: The Movie (1993), and Ghost in the Shell (1995). He also holds the distinction of having created the first ever OVA, Dallos (1983). As a writer, Oshii has worked as a screenwriter, and occasionally as a manga writer and novelist. His most notable works as a writer include the manga Kerberos Panzer Cop (1988–2000) and its feature film adaptation Jin-Roh: The Wolf Brigade (1999).