A transparent superhydrophobic and self-cleaning coating was developed using hydrophobic fumed silica (HF-SiO₂) and waterborne polyurethane (WPU) through a simple spray-coating technique. The coating achieved a water contact angle (WCA) of 158.7 ± 1.5° and a sliding angle (SA) of 6.2 ± 1.8°, demonstrating excellent water-repellent properties, low surface energy, and high transparency. Characterization techniques such as SEM, EDS, LSCM, FTIR, and XPS revealed a micron-scale protrusion and nano-scale porous network composite structure on the surface. The coating exhibited high light transmittance, reaching 96.1% of that of the bare glass substrate. The surface morphology and wettability tests confirmed the superhydrophobic properties, with water droplets bouncing off the surface and self-cleaning capabilities. The coating also showed excellent mechanical stability and durability, making it suitable for various applications such as underwater observation windows, building glass facades, automotive glass, and goggles. The study highlights the potential of this transparent superhydrophobic coating in practical applications due to its high transparency, superhydrophobicity, and self-cleaning properties.A transparent superhydrophobic and self-cleaning coating was developed using hydrophobic fumed silica (HF-SiO₂) and waterborne polyurethane (WPU) through a simple spray-coating technique. The coating achieved a water contact angle (WCA) of 158.7 ± 1.5° and a sliding angle (SA) of 6.2 ± 1.8°, demonstrating excellent water-repellent properties, low surface energy, and high transparency. Characterization techniques such as SEM, EDS, LSCM, FTIR, and XPS revealed a micron-scale protrusion and nano-scale porous network composite structure on the surface. The coating exhibited high light transmittance, reaching 96.1% of that of the bare glass substrate. The surface morphology and wettability tests confirmed the superhydrophobic properties, with water droplets bouncing off the surface and self-cleaning capabilities. The coating also showed excellent mechanical stability and durability, making it suitable for various applications such as underwater observation windows, building glass facades, automotive glass, and goggles. The study highlights the potential of this transparent superhydrophobic coating in practical applications due to its high transparency, superhydrophobicity, and self-cleaning properties.