Prejłowo [prɛi̯ˈwɔvɔ] is a village in the administrative district of Gmina Purda, within Olsztyn County, Warmian-Masurian Voivodeship, in northern Poland. It lies approximately 4 kilometres (2 mi) north of Purda and 15 km (9 mi) east of the regional capital Olsztyn. It is located within the historic region of Warmia.

A historic wayside shrine, typical for Warmia, is located in the village.