The santoor is an Indian stringed musical instrument. It is related to the Indian shata-tantri veena of earlier times and has strong resemblances to the Persian santur. It is a trapezoid-shaped hammered dulcimer often made of walnut, with seventy strings. The special-shaped mallets (mezrab) are lightweight and are held between the index and middle fingers. A typical santoor has two sets of bridges, providing a range of three octaves.

The Kashmiri santoor is more rectangular and can have more strings than the original Persian counterpart, which generally has 72 strings. The santoor as used in Kashmiri classical music is played with a pair of curved mallets made of walnut wood and the resultant melodies are similar to the music of the harp, harpsichord, or piano. The sound chamber is also made of walnut wood and the bridges are made of local wood and painted dark like ebony. The strings are made of steel.