The common wall lizard is a species of lizard with a large distribution in Europe and well-established introduced populations in North America, where it is also called the European wall lizard. It can grow to about 20 centimetres (7.9 in) in total length.

The common wall lizard is a small, thin lizard whose small scales are highly variable in colour and pattern. Its coloration is generally brownish or greyish, and may occasionally be tinged with green. In some individuals the row of spots along their back may form a line, while others may have a reticulated pattern with dark spots on the side and scattered white spots that can be blue in the shoulder region. The tail is brown, grey or rust in colour, and may also have light bars on the sides. The belly region has 6 rows of larger rectangular scales that are generally reddish, pink, or orangish. Common wall lizards may also have dark markings on the throat.

The common wall lizard prefers rocky environments, including urban settings where it can scurry between rock, rubble, debris and buildings.

The natural range spans mainland Europe, including central Spain, southern Belgium, and the Netherlands. It occurs as introduced populations in southern Britain, and also in North America.