Previous research has found that familiarity with the recipient influences children’s sharing behavior, but the recipient is mainly limited to humans. With the spread of artificial intelligence, our social interactions are expanding to nonhumans, such as robots. The present study investigated the effects of familiarity on children’s sharing behavior with robot recipients. Familiarity varied as a function of whether there were interactions between the child and the robot. The Dictator Game was used to measure children’s sharing behavior. Consistent with our initial predictions, children shared more stickers with the familiar robot than with the unfamiliar one. We also conducted the animism test to ensure that the participants did not make animism errors towards robots. Our findings suggest that, children may view robots as special beings with which they can build social connections, even though they know robots are not alive.