Natural cytotoxicity triggering receptor 3 is a protein that in humans is encoded by the NCR3 gene [PMID: 8824804]. NCR3 has also been designated as CD337 (cluster of differentiation 337) and as NKp30. NCR3 belongs to the family of NCR membrane receptors together with NCR1 (NKp46) and NCR2 (NKp44) [PMID: 31134055].