Transhumanism is an international cultural movement which seeks to fundamentally transform the human condition through radical technological enhancement. Transhumanists claim that we are already in transition to a new phase of humanity where the limitations of mortality, ignorance, and suffering will soon be altered or even completely erased. The Philosophy of Transhumanism: A Critical Analysis presents the central ideas of transhumanist philosophy and offers a lens through which to reflect on the meaning of being human in anticipation of radical technology. The radical technologies in question variously include greater-than-human machine intelligence, mind-computer interfaces, gene-editing, and nanotechnology. The continued funding and interest generated by those associated with these projects suggest transhumanism is continued migration from a fringe concern to a central way of conceiving the future. Though a variety of positions exist within transhumanism, the unifying theme is a belief that the techno-engineering of a new type of upgraded human is both beneficial and inevitable. These ambitions raise serious questions about the appearance of a transhuman or even posthuman being, and warrants a critical analysis from alternative philosophical and religious perspectives. This book seeks to present the philosophy of transhumanism in a way that is both timely and accessible, and to challenge what will be seen as the core argument of transhumanist philosophy: that there is nothing about human beings that cannot be reconceived as a technical problem.