Gärstad is a village in Linköping Municipality, in Östergötland County, Sweden. Gärstad lies at 35 m above sea level. The nearest city is Linköping, 4.5 km to the south. Among the landmarks around are Linköping Cathedral (4.4 km), Östergötland Museum (4.1 km) and Vreta Abbey (7.7 km). Among the natural features are Flistads brunn (12.2 km) and Kanberget (4.9 km).