David Addison Haig (born 28 June 1958) is an Australian evolutionary biologist, geneticist, and professor in Harvard University's Department of Organismic and Evolutionary Biology.[1] He is interested in intragenomic conflict, genomic imprinting and parent–offspring conflict, and wrote the book Genomic Imprinting and Kinship. His major contribution to the field of evolutionary theory is the kinship theory of genomic imprinting.