Apparatus and methods for integrating tissue processors and embedding systems. An apparatus, of one aspect, includes a robot. The robot has a work envelope that encompasses a location having a tissue holder and an input of an embedding system. The tissue holder has at least one processed tissue. The robot is configured to transfer the tissue holder from the location to the input of the embedding system. A method, of one aspect, may include moving a robot to a location having a tissue holder. The tissue holder may have at least one processed tissue. The robot may engage with the tissue holder at the location. The robot may move the tissue holder from the location to an input to an embedding system. The robot may disengage from the tissue holder at the input to the embedding system. Other methods, apparatus, and systems are also disclosed.