Sjisjka, (Swedish) also spelt Sjiska or Šišká (North Sami), is a locality in Gällivare Municipality, Sweden.
It has a railway station on the Iron Ore Line 20 km south of Kiruna, between Kalixforsbron and Kaitum.
Taking the train to Sjisjka is the only way to enter the Kaitum Fjällurskog Nature Reserve apart from hiking or skiing.
Only two trains a day stop at the station, one in the morning going south towards Boden and one in the evening going north towards Kiruna.
The company Vindkompaniet i Kiruna wants to build windmills on a hill immediately west of Sjisjka.