Frank Oz

Oz was born on May 25, 1944, in Hereford, Herefordshire, England, United Kingdom; the son of Frances (née Ghevaert; 1910–1989) and Isadore "Mike" Oznowicz (1916–1998), both of whom were puppeteers. Some of their puppets survived the war and were presented at the Contemporary Jewish Museum in San Francisco. His father was also a window trimmer. His parents moved to England where the father joined the Dutch Brigades. Oz's Dutch-Polish father was Jewish, and his Flemish mother was a Catholic.

They left the UK when he was six months old and lived in Belgium until he was five. Oz and his family moved to Montana in 1951. They eventually settled in Oakland, California. Oz attended Oakland Technical High School and Oakland City College. He worked as an apprentice puppeteer at Children's Fairyland as a teenager with the Vagabond Puppets, a production of the Oakland Recreation Department, where Lettie Connell was his mentor.