A trial was conducted on 5 years old subtropical mango cultivars (T₁ = Amrapali, T₂ = Mallika, T₃ =Dashehari, T₄ = Langra, T₅ = Bombay green (BG) and T₆ = Ramkela) during 2000-2014 at Research Farm, Selakui, ICAR-Indian Institute of Soil and Water Conservation (ICAR-IISWC), Dehradun. Mango cultivars were planted in the randomized block design (RBD) with three replications to assess performance on non-arable lands in the subtropical zone of Uttarakhand, India. Data revealed that Mallika cultivar of mango recorded maximum canopy spread (5.85 m), produced highest fruit yield (9.85 tha^-1) followed by Amrapali and Dashehari, Langra, Bombay Green and lowest fruit yield in Ramkela. Similarly, Mallika also produced maximum carbon stock in the plant body (25.45 Mg ha^-1) and sequestered maximum atmospheric carbon dioxide (93.15 Mg ha^-1) followed by Dashehari, Langra and minimum with Amrapali. Economic returns were also recorded maximum with Mallika followed by Amrapali, Dashehari, Langra and minimum with Ramkela. Hence, Mallika followed by Amrapali/Dashehari is recommended for economic returns, productivity, carbon sequestration and rehabilitation of degraded lands in the foothills of Uttrakahnd.