https://onlinelibrary.wiley.com/doi/full/10.1002/advs.201900344 A heart was printed using the patient's own cells or in other words: Generation of thick vascularized tissues that fully match the patient still remains an unmet challenge in cardiac tissue engineering. Here, a simple approach to 3D‐print thick, vascularized, and perfusable cardiac patches that completely match the immunological, cellular, biochemical, and anatomical properties of the patient is reported. https://onlinelibrary.wiley.com/doi/full/10.1002/advs.201900344