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Low cost superhydrophobic cotton fabric was developed using TiO 2 /cyanate ester coating for the first time. The TiO 2 /cyanate ester coated cotton fabric displayed superhydrophobic behaviour with water contact angle of 158°, sliding contact angle of 8°a nd surface free energy of 18.0 mN/m 2 . Besides, the TiO 2 /cyanate ester coated cotton fabric also possesses excellent laundry durability as well as stability against acid, alkali salt solutions and mechanical abrasion. Consequently, the TiO 2 /cyanate ester coated cotton also delivered superior oil-water separation efficiency with different types of oil/water mixtures that includes engine oil/water, waste engine oil/water, petrol/water and diesel/water. The TiO 2 /cyanate ester coated cotton fabric shows separation efficiency as high as 98% with flux value of 7200 L/m 2 h for petrol/water mixture. Further, both cyanate ester and TiO 2 /cyanate ester coated cotton fabric delivers ultra-high UV-resistant ability with Ultraviolet Protection Factor value as high as 500 ? . Hence, it is anticipated that the present approach of using cyanate ester can be widely explored further to construct multifunctional fabrics towards excellent self-cleaning as well as oil/water separation with UV and chemical robustness.