Smolnik may refer to the following places:
Bulgaria Smolnik, Bulgaria, a village in Karnobat Municipality, Burgas Province
Slovakia Smolník, Gelnica District, a village and municipality in the Košice Region Smolník, Snina District, a former village in the Prešov Region
Slovenia Smolnik, Ruše, a dispersed settlement in the Styria region Smolnik, Dobrova–Polhov Gradec, a dispersed settlement in the Upper Carniola region
Poland Smolnik, Lower Silesian Voivodeship (south-west Poland) Smolnik, Bieszczady County in Subcarpathian Voivodeship (south-east Poland) Smolnik, Sanok County in Subcarpathian Voivodeship (south-east Poland) Smolnik, Greater Poland Voivodeship (west-central Poland) Smolnik, Warmian-Masurian Voivodeship (north Poland) Smólnik, Kuyavian-Pomeranian Voivodeship (north-central Poland)