山麦冬，又称土麦冬，（学名：Liriope spicata），为天门冬科山麦冬属下的一个植物种。

多年生常绿草本，须根常于中部膨大成纺锤形；木质的根状茎短，有地下匍匐茎；线形革质的叶子丛生，中脉较明显；秋季开淡紫色花，花葶一般比叶子长，总状花序花较多，每3～5朵簇生苞片腋内；子房壁于花后萎谢；黑色浆果状种子。

Liriope spicata is a species of low, herbaceous flowering plants from East Asia. Common names include creeping lilyturf, creeping liriope, lilyturf, and monkey grass. This perennial has grass-like evergreen foliage and is commonly used in landscaping in temperate climates as groundcover. Creeping lilyturf has white to lavender flowers which produce single-seeded berries on a spike in the fall. It is one of the most popular groundcovers in the southeastern United States and areas with a similar climate.