An experimental study was conducted to investigate the effect of different nitrogen fertilizers and rice cultivars on CH₄ emission from a rice paddy. The experiment was designed with two nitrogen fertilizer types, (ammonium sulfate and urea). Two rice cultivars (Giza 177 and Sakha106) were used for the plots experiment. Each experiment replicated triply. Methane flux was measured at different growth stages for the two rice cultivar treated with ammonium sulfate or urea fertilizer. There was significantly increase in methane emission fluxes due to plantation of Sakha₁₀₆ rice as a comparison of two rice varieties, Moreover, ammonium sulfate treatment significantly reduced CH₄ emissions by 50 to 55 % emissions compared to urea plots, also results indicated that the combination of (NH₄)₂SO₄ application and sakha ₁₀₆ rice. It was concluded that the CH4 emission was dependent on the type of nitrogen fertilizer and rice varieties in Egypt paddy soils.