曼陀林（英语：Mandolin），拨弦乐器，由欧洲文艺复兴时期的琉特琴演变而来，一般有钢弦四对，按小提琴音高定音，用拨子弹奏。

A mandolin (Italian:mandolino pronounced [mandoˈliːno]; literally "small mandola") is a musical instrument in the lute family and is usually plucked with a plectrum or "pick". It commonly has four courses of doubled metal strings tuned in unison (8 strings), although five (10 strings) and six (12 strings) course versions also exist. The courses are normally tuned in a succession of perfect fifths. It is the soprano member of a family that includes the mandola, octave mandolin, mandocello and mandobass.