This article introduces the field of trans pornography studies and makes a case for why studying it matters. We locate trans pornography within the broader field of porn studies, while also pointing to its importance to transgender studies. We map the history of trans pornography and examine the wider social, political, and economic forces contributing to the transformation of trans porn into a genre of mainstream straight porn. We discuss the economic organization of the trans porn industry and current industry trends, including geographical shifts in production and the rise of alternative production platforms. We address areas of future research and the need for more scholarship on the political economy of the trans porn industry, audiences and consumers, transmasculine representation in pornography, and research that focuses on trans porn production outside the United States.