Reproductive technology offers a bewildering number of options for infertile men and women to have children, including ovary and testis freezing, transplantation, in vitro fertilization (IVF), donor sperm, donor eggs, stem cells, gestational surrogacy, genetic diagnosis of embryos, and, of course, birth control. These technologies cut to the very core of personal and religious belief systems. The purpose of this chapter is to explain the approach of classic Jewish Law to these technologies and how I see my work within it.