This study was conducted at the established pummelo orchard, Regional Agricultural Research Station, BARI, Ishurdi, Pabna, Bangladesh during the year 2004-2005. The experiment was laid out in completely randomized block design with three replications. Twenty four cultivars of pummelo viz. Raj-9, Raj-34, Raj-41, Raj-43, Raj-48, Raj-51, Raj-65, Raj-75, Raj-32, Bog-6, Bog25, Bog-32, NBSM, Rang-40, Rang-46, Rang-49, Rang-50, Rang-52, Din-18, Din-29, Pab-38, Pab-42, Pab-52 and one exotic cultivar (Thailand) were included. The experimental area was under sub-tropical climatic zone and characterized by moderate rainfall, high temperature, high humidity and relatively long days during kharif season and scanty rainfall, low temperature and short day length during rabi season. The soil of experiment was clay loam in texture belonging to high Ganges River flood plain under AEZ 11. The selected plot was well drained having pH value 8.5. Intercultural operations were done as and when necessary including weeding and irrigation. Data were recorded on plant height, spread at north-south and east-west, plant growth, base girth, leaf area, leaf shape, leaf apex, period of flowering, harvesting season, number of fruits per plant, fruit weight, pulp weight, rind weight, rind thickness, fruit length, fruit width, number of segment per fruit, weight of juice vesicle, number of seeds per fruit and fresh/dry weight of seed per fruit. Qualitative characteristics such as fruit shape, fruit skin colour, skin texture, disease and insect infection, pulp colour, sourness, softness, juiciness, bitterness, total soluble solid (TSS) and total acid percentages were also recorded. The height of plants was measured by calibrated measuring stick. Plant growth was determined by a formula: H x NS spread x E-W spread x 0.7 a constant factor for citrus fruits, where H represents height, N-S represents north-south spread, and E-W represents east-west spread. Base girth was measured by measuring tape one meter above the ground level. Ten leaves were selected randomly from each of three plants of each cultivar to study leaf shape and leaf apex. Leaf area was measured by leaf area meter (CI-202 area meter, CID, Inc, USA). The total acid content was recorded by an electrically operated acid meter. The TSS percentage was determined by hand refractometer (ATAGO NI Brix 0-32%, made in Japan). External appearance, external colour and pulp colour of fruits of different cultivars were recorded visually using a colour chart. The test of fresh flesh, sweetness, sourness, softness, juiciness and bitterness of the pulp were recorded through organoleptic taste by a panel of ten judges. The significance of difference between treatments mean was evaluated by least significance difference (LSD) test for interpretation of results.