In this paper we report the identification of a new HLA- Cw*03 allele in a sample that has been distributed in the International UCLA Terasaki Cell/DNA Exchange. This novel allele officially designed Cw*03033 and renumbered to Cw*030303 (2) found in cell no. 1054 from an Asian Indian donor differs from Cw*030301 by a silent substitution at codon 128, GGG-->GGA (nucleotide position 384). This new allelic variant was confirmed by several other laboratories participating in the UCLA Terasaki Cell/DNA Exchange (3).