Grus can refer to
- Grus (genus), a genus of birds in the crane family.
- Grus (constellation), the constellation "Crane"
- Grus (geology) or grit (geology), a clastic sediment composed of hard, often abrasive granules of a size range between sand and pebbles, typically from exfoliation of bedrock (typically granite)
- Grus, the historical sword of Boleslaw Krzywousty (Boleslaus the Wrymouthed), medieval prince of Poland.