The title of this article is ambiguous. For other meanings, see Swastika (disambiguation).

A swastika (also Svastika, Suastika; from Sanskrit m. स्वस्तिक svastika 'good luck charm') is a cross with four uniformly angled arms of approximately equal length. They may point to the right or left, be right-angled, acute-angled, shallow-angled or round-angled, and be connected with circles, lines, spirals, dots or other ornaments. Such signs, the oldest dating from about 10,000 BC, have been found in Asia and Europe, and less frequently in Africa and America.

The sign has no uniform function and meaning. In Hinduism, Jainism and Buddhism, the swastika is still used today as a religious symbol of luck. In German, a heraldic sign similar to the swastika has been called the "swastika" since the 18th century.

In the 19th century, ethnologists discovered the swastika in various cultures of antiquity. Some transfigured it into the sign of an alleged Indo-Germanic race of "Aryans". The German völkisch movement interpreted the swastika in anti-Semitic and racist terms. Subsequently, the National Socialists made a swastika angled to the right and inclined at 45 degrees the emblem of the NSDAP in 1920 and the central component of the flag of the German Reich in 1935.

Because the swastika represents the ideology, tyranny and crimes of National Socialism, the political use of swastika-shaped symbols has been prohibited in Germany, Austria and other countries since 1945. In Germany, swastikas may only be displayed for "civic education" and similar purposes according to § 86 paragraph 3 StGB.