一串红（学名：Salvia splendens）是唇形科鼠尾草属的一种植物。也称爆竹红等，原生于巴西。用作观赏花卉，全草可药用。

多年生草本植物，株高80～100厘米。叶子对生，卵形，有长柄，边缘锯齿状。夏秋顶生总状花序，边被红色茸毛，2～6朵小花轮生，唇形花冠，伸出花萼外；花色以红色居多，也有开白色花（一串白）；花萼萼状，与花瓣同色。花谢后，花冠脱落，花萼宿存；花期7～11月。

Salvia splendens (scarlet sage, tropical sage) is a tender herbaceous perennial native to Brazil, growing at 2,000 to 3,000 m (6,600 to 9,800 ft) elevation where it is warm year-round and with high humidity. The native plant, rarely seen in cultivation, reaches 1.3 m (4.3 ft) tall. Smaller selections are very popular as bedding plants, seen in shopping malls and public gardens all over the world.