Tomato is one of the most cultivated vegetables in the world. In this context, intensive tomato breeding studies are carried out around the world and new cultivars are emerging every day, which leads to great competition. In particular, resistance or tolerance levelstolerance levels to some important diseases and pests are considered important in cultivar breeding and in determining the commercial value of cultivars. In this context, the determination of resistance levels to 70 tomatoes, Meloidogyne incognita, Tomato Yellow leaf curling virus (Tylcv), Verticillium wilt, Fusarium oxysporum radicis, Tomato spotted wilt virus (TSWV), Fusarium Wilt, which have the potential to become parent lines at S8 level due to their agro-morphological characteristics formed the subject of this study. When the results of the study are examined, tomato genotypes showed resistance/sensitive levels according to combinations of alleles as 58 genotypes of RR (homozygous resistant), 10 Rr (heterozygous), 2 rr(sensitive) to Meloidogyne incognita, 45 RR (homozygous resistant), 15 Rr (heterozygous),10 rr (sensitive)to Verticillium dahliae, 10 to, 52 RR (homozygous resistant), 13 Rr (heterozygous), 5 rr (sensitive) to Tomato Spotted Wilt Virus,46 RR (homozygous resistant) 18 Rr (heterozygous), 6 rr (sensitive) to Tomato Yellow leaf Curl Virus, Fusarium oxysporum (Fusarium wilt) 49 RR (homozygous resistant), 13 Rr (heterozygous), 8 rr (sensitive), Fusarium oxysporum radicis (Frl) 52 Their resistances were determined as RR (homozygous resistant), 12 Rr (heterozygous), 6 rr (sensitive).