This study was conducted to investigate the effects of NaCI and CaCl2 level on germination of some onion genotypes. Seeds of 'Kantartopu-3', 'Akgun-12', 'Imrali Kirmasi-15', 'Metan-88' and 'Beyaz Bilek' were used. Electrical conductivities (EC) of salt solutions were 1.2, 2.4, 4.8 and 9.6 dS m(-1) and distilled water (0 dS m(-1)) served as control. Germination percentage (%), mean germination time (days), shoot length (mm) and seedling fresh and dry weight (mg) were measured at 12 days after sowing. Genotypes showed different responses to NaCI and CaCl2. Increased salinity levels resulted in decreased germination, inhibition of seedling growth and increased mean germination time. Varieties showed different responses for different parameters.