Robert Paul Lanza (born February 11, 1956) is an American Doctor of Medicine, scientist, Chief Scientific Officer of Advanced Cell Technology (ACT), and Adjunct Professor at the Institute for Regenerative Medicine, Wake Forest University School of Medicine.
Lanza was part of the team that cloned the world's first early stage human embryos for the purpose of generating embryonic stem cells. Lanza demonstrated that techniques used in preimplantation genetic diagnosis could be used to generate embryonic stem cells without embryonic destruction.
In 2001, he was also the first to clone an endangered species (a Gaur), and in 2003, he cloned an endangered wild ox (a Banteng) from the frozen skin cells of an animal that had died at the San Diego Zoo nearly a quarter-of-a-century earlier.
Lanza and his colleagues were the first to demonstrate that nuclear transplantation could be used to reverse the aging process and to generate immune-compatible tissues, including the first organ grown in the laboratory from cloned cells.
Lanza has also authored and co-edited books on topics involving tissue engineering, cloning, stem cells, and world health.