异叶水蓑衣（学名：Hygrophila difformis）为爵床科水蓑衣属下的一个种。

Hygrophila difformis, commonly known as water wisteria (though it is not closely related to true wisteria), is an aquatic plant in the acanthus family. It is found in marshy habitats on the Indian subcontinent in Bangladesh, Bhutan, India and Nepal. It grows to a height of 20 to 50 cm with a width of 15 to 25 cm.