Mikołajew

Mikołajew may refer to the following places:
 * Mikołajew, Łęczyca County in Łódź Voivodeship (central Poland)
 * Mikołajew, Zgierz County in Łódź Voivodeship (central Poland)
 * Mikołajew, Podlaskie Voivodeship (north-east Poland)
 * Mikołajew, Masovian Voivodeship (east-central Poland)