虎尾兰（Snake Plant），又名虎皮兰，锦兰，黄尾兰或岳母舌，属百合目假叶树科的植物，另外有学者把它归类为天门冬目龙舌兰科Agavaceae。

多年生常绿草本，匍匐的根状茎；挺直质厚的条状披针形至倒披针形叶子1～6枚簇生，两面有许多深绿色横带状斑纹，看起来像老虎的尾巴，故名；花葶连同花序高30～80厘米，白色至淡绿色花，3～8簇生成总状花序。

Sansevieria trifasciata, also called viper's bowstring hemp, snake plant, mother-in-law's tongue or Saint George's sword (in Brazil) is a species of flowering plant in the family Asparagaceae, native to tropical West Africa from Nigeria east to the Congo.