A standard violin has four strings. These strings are traditionally tuned to the notes G, D, A, and E, from the lowest pitch (G) to the highest (E)

. The strings can be made from various materials such as catgut, nylon, or steel

. While the typical violin has four strings, there are variations including violins with five or more strings, sometimes up to seven or eight strings, especially in electric or specialized violins. These extended-string violins offer a wider tonal range but are less common and usually used for specific musical styles or experimental purposes

. In summary, the standard and most common violin has four strings.