There is no religious scripture or teaching, which clearly indicates that surrogacy is allowed in Hinduism or not. Though there have been instances and happenings in ancient Hindu mythology which proves that practises such as surrogacy and artificial insemination did exist. For instance, the story around the birth of Drishtadyumna and Draupadi. King Draupada had enmity with Dronacharya and wanted to have a son strong enough to kill Drona.A rishi gave him medicine and after collecting his semen, processed it and suggested that it should be implanted into his wife who refused to do so. The Rishi then inseminated Yajnakunda from which Dhrishtadyumna and Draupadi were born. This is just one example and I am sure many such would have existed. So to summarise, there is nothing in Hinduism which prohibits surrogacy and it is still widely practised in India today. In fact, surrogacy is a booming like never before.