Liquid-repelling surfaces have received tremendous attention owing to their unique self-cleaning, anti-icing, anti-sticking, and antireflective properties. Various natural surfaces, owing to their specific surface structure, exhibit high water/ oil repellency. Study of such naturally occurring superhydrophobic/ superoleophobic surfaces has led to the understanding that the wettability of surfaces depends on their surface energy and surface structure. Surfaces with multilevel roughness exhibit high contact angles due to formation of air-liquid interfaces. The present chapter reviews the basic physical understanding and the structure-property correlations of the liquid-repelling surfaces. The chapter further explores the structures of various naturally occurring liquid-repellent surfaces and reports the recent progress achieved toward the development of artificial liquid-repellent surfaces by mimicking the natural ones. Finally, various techniques being employed to fabricate such surfaces have been described. © Springer-Verlag Berlin Heidelberg 2017.