Extraterrestrial organic matter forms in a variety of locations in space through different mechanisms. Its nature, distribution, formation mechanisms and locations are of particular interest. Some organic molecules can even be considered as key players for the emergence of life. Although new organic species are continuously detected in the interstellar media, Solar System bodies, and extraterrestrial materials, their formation and evolution are still not fully understood. Ground-based and space observations can detect organic matter in different objects with a range of complexity and diversity, while laboratory investigations of astromaterials allow detailed characterization of extraterrestrial organic matter with high precision. This issue reviews different aspects of extraterrestrial organic matter, including its origin, evolution, diversity, and delivery.

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