Bombus argillaceus is a bumblebee species of the subgenus Megabombus, distributed from south and south-eastern Europe to western Asia.

[2] A large bumblebee, the queen has a body length of 24 to 28 mm (0.94 to 1.10 in) with a long proboscis, a very oblong head[3] and dark wings.

[4] In Turkey, it lives in the mountains, usually at heights between 900 and 1,870 m (2,950 and 6,140 ft) above sea level.

[4] B. argillaceus is found from the eastern Mediterranean to the Alps in France, Italy, Switzerland, and Austria, over Hungary north to Cluj in Romania.

In the east, it reaches eastern Kazakhstan, and in the south and south-east the Balkans, Greece,[5] Cyprus, Turkey, the Caucasus, and northern Iran.