Slaka is a locality in Linköping Municipality, in Östergötland County, Sweden. Slaka lies at 95 m above sea level. It has 573 inhabitants (2023). The nearest city is Linköping, 6.2 km to the northeast. Among the landmarks around are Linköping Cathedral (6.0 km), Östergötland Museum (6.3 km) and Swedish Air Force Museum (5.2 km). Among the natural features are Flistads brunn (14.5 km) and Kanberget (5.5 km).