Quantum technologies are becoming increasingly significant in space applications and defense. Quantum communication offers secure methods for data transmission, which have already been demonstrated in Earth-to-satellite links, paving the way for advanced communication systems and quantum networks. Quantum sensing is expected to play a vital role in GPS-denied navigation and precise Earth measurements on space stations and satellites. This chapter reviews the latest advancements in quantum communication and quantum sensing for space applications and explores their future developments and potential impact.