There is a striking similarity between the philosophy of Martin Heidegger and Harry G. Frankfurt: they both argue that the temporal nature of human existence and agency is due to the fact that humans care about things. Even though Heidegger’s concept of care and Frankfurt’s concept of caring are very different, they are worth comparing because they play a similar role and have similar significance in their thinking. This comparison also offers an opportunity for a desired dialog between philosophers working in those two different traditions. I argue that the two views can complement each other: Though Frankfurt provides a detailed psychological description of caring, his concept of caring is too mentalistic and leads to solipsism. Thus, his theory can be enriched with the help of Heidegger’s view based on the concept of Being-in-the-world.