Planting density is an important factor for plant growth and yield performance. As it is a newly introduced crop in Bangladesh, experiment on planting density became crucial to know the effect of planting density on the growth, morpho-physiological, yield and yield contributing characters of Chia (Salvia hispanica L.). Therefore, a field experiment on planting density (11, 22, 66 plants m-2) was carried out at the Field Laboratory of the Department of Crop Botany, Bangladesh Agricultural University, Mymensingh. The experiment was laid out in a RCBD with three treatments and three replications. The collected data were analyzed statistically and the means were adjudged by DMRT at 5% level of probability. Among the planting densities, 66 plants m-2 showed significantly the best performance on growth and yield (168.63kgha-1) compare to other planting densities (11 plants m-2and 22 plants m-2). This finding suggests that 66 plants m-2 is better for commercial Chia production in Bangladesh.