Marsilea minuta, or dwarf waterclover is a species of aquatic fern in the family Marsileaceae. It is not to be confused with Marsilea minuta E.Fourn. 1880, which is a synonym for Marsilea vestita. Other common names include gelid waterklawer, small water clover, airy pepperwort, and pepperwort, though the lattermost also applies to plants in the genus Lepidium. In French it is called marsilea à quatre feuilles (literally "four-leafed marsilea") and petite marsilée (literally "little Marsilea"), the latter appearing to be a calque with the Latin botanical name. In Chinese it is 南国田字草 (nan guo tian zi cao), literally "southern field word grass," referencing the similarity of the leaflet shape to the Chinese character for "field." The Koch Rajbongshi people and Garo people call it shusni shak. It is called 'শুশনি শাক' (shushni shak) in Bengali. In parts of India it can be called sunisanakka. In Indonesian it is semanggi (literally "clover"), but this name also applies to Marsilea crenata. In Japanese it is nangokudenjiso and in Thai it is phakwaen. In Malaysian it is tapak itik (literally "duck footprints"). In the Philippines it is kaya-kayapuan (literally "so crowded").

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