绛三叶（学名：Trifolium incarnatum）是一种豆科植物。这种植物原产于撒丁岛、巴利阿里群岛、北非阿尔及利亚和其它地中海附近的欧洲国家。

Trifolium incarnatum, known as crimson clover or Italian clover, is a species of clover in the family Fabaceae, native to most of Europe. The species name incarnatum means "blood red".

This upright annual herb grows to 20-50 cm tall, unbranched or branched only at the base. The leaves are trifoliate with a long petiole, each leaflet hairy, 8-16 mm across, with a truncated or bilobed apex. The flowers are produced throughout the spring and summer, rich red or crimson, congested on an elongated spike inflorescence 3-5 cm tall and 1.5 cm broad; the individual flowers are up to 10-13 mm long and have five petals. The banner of each flower does not sit upright, but folds forward.