Sjulsmark is a locality in Piteå Municipality, in Norrbotten County, Sweden. Sjulsmark lies at 39 m above sea level. It has 340 inhabitants (2023). The nearest city is Piteå, 22 km to the south. Among the landmarks around are Boden Fortress (31 km), Nederluleå Church (29 km) and Luleå Cathedral (31 km).