The G glycoprotein is the most variable gene among different strains of human and bovine res­piratory syncytial viruses (RSV). One isolate of ovine RSV isolated from domestic sheep has been molecularly characterized before. In this study, partial nucleotide sequence (65%) of the G gly­coprotein gene of RSV isolate of wild bighorn sheep and its predicted protein are reported. Very high level of identity at the nucleotide and amino acid levels between the two RSV isolates of do­mestic sheep and wild Bighorn sheep suggests that Bighorn sheep RSV may be considered as a member of the ovine RSV subgroup. This infor­mation will help in understanding RSV epidemi­ology and vaccine development in cattle and sheep.