thumb|200px|right|Oblique [[Landsat image of Talemzane crater draped over digital elevation model (x3 vertical exaggeration); screen capture from NASA World Wind]]
Talemzane or madena (Tamazight: ⵜⴰⵍⴻⵎⵣⴰⵏ Arabic: تالمزان/مادنة) is an impact crater in Algeria, 40 km south-east of Hassi Delaa (a small city). The Arabic name of the crater is "Maadna" and means "depression of ore."
The Talemzane crater has a diameter of 1.75 km. As such, it is classified as a "simple crater" (meaning a diameter of less than 2 km). It is one of two simple craters in Algeria's Saharan Platform. According to estimates, the crater formed between 203,000 and 3 million years ago.