A barley cultivar, designated Champion, is disclosed. The invention relates to the seeds of barley cultivar Champion, to the plants of barley Champion, and to methods for producing a barley plant produced by crossing barley cultivar Champion with itself or another barley variety. The invention also relates to methods for producing a barley plant containing in its genetic material one or more transgenes and to the transgenic barley plants and plant parts produced by those methods. The invention also relates to barley varieties or breeding varieties and plant parts derived from barley cultivar Champion, to methods for producing other barley varieties, lines or plant parts derived from barley cultivar Champion, and to the barley plants, varieties, and their parts derived from the use of those methods. The invention further relates to hybrid barley seeds and plants produced by crossing barley cultivar Champion with another barley cultivar. This invention further relates to methods for developing other barley varieties or breeding lines derived from variety Champion including cell and tissue culture, haploid systems, mutagenesis, and transgenic derived lines.