Provided is a coffee maker having a structure for preventing water from leaking while a water storage container is unloaded, and a microwave oven having the same. The coffee maker includes: a water storage container storing water for extracting coffee and having a drainage hole formed at one sided portion thereof; a tube guiding water drained through the drainage hole of the water storage container so as to extract coffee; and a connection unit having a first connector of which one end is connected to the water storage container, and a second connector of which one end is connected to the tube and the other end is separatably connected to the first connector. The connection unit communicates the water storage container with the tube and prevents water from leaking from at least one of the water storage container and the tube when the first connector and the second connector are separated from each other.