风信子（学名：Hyacinthus orientalis）是天门冬科风信子属的植物。

原产于亚洲西南部、土耳其南部和中部、叙利亚西北部、黎巴嫩和以色列北部，在16世纪被引种到欧洲。

多年生草本，地下具有球形鳞茎，直径3－7厘米；披针形叶子厚，肉质质软，长15－35厘米，宽1－3厘米，螺旋状基生；花茎略高于叶，中空，顶生总状花序，高20－35厘米，偶为45厘米，由2－50朵芳香的紫色花组成穗状花序，长2－3.5厘米，管状花被6裂。

Hyacinthus orientalis (common hyacinth, garden hyacinth or Dutch hyacinth), is a herbaceous perennial flowering plant, native to southwestern Asia, southern and central Turkey, northwestern Syria, Lebanon and northern Israel. It was introduced to Europe in the 16th century. It is widely cultivated everywhere in the temperate world for its strongly fragrant flowers which appear exceptionally early in the season, and frequently forced to flower at Christmas time.