The study was carried out to evaluate the nutrition contents of Buchanania lanzan (Chironji) seeds obtained from thirteen candidate plus trees (CPTs) and analyzed for its nutritional composition. It was observed that total carbohydrate content ranged from 3.30g/100g (MPC-11) to 30.83g/100g (MPC-9), fatty oil and the content ranged from 39.7% (MPC-14) to 56.2% (MPC-8), ash content in defatted seeds ranged from 5.4% (MPC-11) to 32% (MPC-3), ascorbic acid content ranged from 9.3 mg/100g (MPC-2, 3, 7, 11, 12) to 17.6 mg/100g (MPC-10), phenol content was 339.6 mg/100g being found in MPC-14 and lowest content of 98.27 mg/100g was observed in MPC-9 and tannin content ranged from 56.60 mg/100g (MPC-9) to 577.3 mg/100g (MPC-8). Trace elements zinc content ranged from 1.31 ppm (MPC-12) to 2.12 ppm (MPC-10), Manganese content ranged from 0.44 ppm (MPC-14) to 0.98 ppm (MPC-2), Copper content ranged from 0.37 ppm to 1.28 ppm and Iron content ranged from 3.26 ppm (MPC-11) to 19 ppm (MPC-2). Based on the results obtained from the study, it can be concluded that the seeds of B. lanzan provide good opportunities to develop value added products, dietary supplements and phytotherapeutic compounds. MPC-8 was found to be the best source in respect of oil, carbohydrates and tannin content followed by MPC-10 and MPC-2 for ascorbic acid and trace minerals.