Susat may refer to:

• SUSAT, telescopic sight
• Susat (Rostov Oblast), Russia
• Susart, Isfahan Province, Iran, sometimes romanised as Sūsāt
• Susat, archaic name of several cities called Soest (disambiguation)

• Eupithecia gibbosa
• Eupithecia gibsonata
• Eupithecia gigantea
• Eupithecia gilata
• Eupithecia gilvipennata
• Eupithecia glaisi
• Eupithecia glaucomictata
• Eupithecia glaucotincta
• Eupithecia globulariata
• Eupithecia gluptata
• Eupithecia golearia
• Eupithecia gomerensis
• Eupithecia gomerensis gomerensis
• Eupithecia gomerensis leucophaeata
• Eupithecia gonypetes
• Eupithecia goosensiata
• Eupithecia goossensiata
• Eupithecia goslina
• Eupithecia gozmanyi
• Eupithecia graciliata
• Eupithecia gradatilinea
• Eupithecia graeciata
• Eupithecia graefi
• Eupithecia graefii
• Eupithecia granata