Constellations are groupings of stars as they are viewed, along a line-of-sight at a constant azimuth and elevation in the sky.

Wikimedia Commons has media related to Constellations.

Wiktionary has a category on Constellations.

This category identifies the 88 constellations currently recognised (areas of the sky) by the International Astronomical Union (IAU), plus some further subcategories.

For individual stars, see also the category Stars.