This report summarizes the results of sweet corn variety trials conducted in 1973. Coordinated Advanced trials of 10 earaly cultivars and Coordinated Observation trials on 15 early cultivars were conducted at Simcoe and Smithfield near Trenton, Ontario. Observation trials at Simcoe included 36 commercial cultivars, 15 experimental hybrids submitted for trial and 161 experimental hybrids produced at the Horticultural Research Institute of Ontario, Vineland Station, Ontario.