Grootegast is the main village of the municipality. The name of the village refers to a 'gast' or 'gaast', a higher, sandy ridge in an otherwise swampy area. Groot is Dutch for 'large'.
Lutjegast is a village in the municipality of Grootegast. In the Groningen dialect of Low Saxon 'Lutje' means small or little.
Lutjegast was the birth place of the explorerAbel Tasman. Although the house of his birth no longer exists, he is memorialised with a monument, plaque and street name.