The Junkers Jumo 205 is a German aircraft engine designed in the 1930s. It is a two-stroke, in-line diesel engine known for its efficiency and reliability. The engine was primarily used in various aircraft during World War II, providing a power output of around 600 horsepower. This engine was notable for its ability to run on a variety of fuels, making it versatile for military applications. The Jumo 205 contributed to the development of diesel engines in aviation, influencing future designs and technologies in the field.