The combustion method is increasingly replacing the traditional Kjeldahl method for nitrogen analysis due to advances in dry combustion analyzer technology and the high cost of handling hazardous waste from wet digestion. This study compared the performance of both methods in determining nitrogen content in oil palm leaves and fronds of different ages. Nitrogen content in leaves ranged from 2.34% to 2.44% using combustion and 2.31% to 2.37% using Kjeldahl. For fronds, values ranged from 0.33% to 0.41% (combustion) and 0.29% to 0.37% (Kjeldahl). No significant differences were observed, and coefficients of variation were consistently below 1%. A strong linear correlation was found between methods (R² = 0.9607 for leaves, R² = 0.9076 for fronds). Given its speed, simplicity, and reduced environmental impact, the combustion method may serve as the preferred analytical technique for nitrogen determination in oil palm tissues.