This study was undertaken at the Bangladesh Wheat and Maize Research Institute, in Dinajpur, Bangladesh in consecutive two years to assess the heat stress tolerance of recently released six wheat varieties by observing their phenology, growth, yield and yield attributes, as well as by evaluating several heat tolerance indices. The treatments consisted of six recently released elite wheat varieties (‘Shatabdi’, ‘BARI Gom 26’, ‘BARI Gom 27’, ‘BARI Gom 28’, ‘BARI Gom 29’ and ‘BARI Gom 30’), sown at two conditions: optimum sowing on November 15 and extremely late sowing under heat stress on January 15. Treatments were arranged in a split-plot design with three replications. Sowing dates were arranged in main plots and the wheat varieties in sub-plots. Because of the high-temperature stress at the late sown condition, all wheat varieties complete their life cycle much faster than in optimum sowing time, finally reducing grain yield (GY). The combined effect of sowing dates and varieties was significant (p0.01) for all traits, including plants m-2, tillers m-2, leaf area index, biomass at 45 days after sowing, spikelets spike-1, grains spike-1, 1000-grain weight, harvest index, biomass at harvest and GY. In optimum sowing conditions, growth, yield and yield components were significantly higher than in late sowing under heat stress. Among all wheat varieties, significantly (p0.01) highest (5096 kg ha-1) GY was obtained from ‘Shatabdi’ and lowest from ‘BARI Gom 27’ (3955 kg ha-1), when sown under optimum conditions. When sown late, ‘BARI Gom 30’ was found heat tolerant and produced the maximum GY (1834 kg ha-1), whereas ‘BARI Gom 27’ was found highly sensitive to heat and produced the lowest GY (1353 kg ha-1). Under both sowing conditions (optimum and late sowing), significantly maximum GY (3476 kg ha-1) and biological yield (6794 kg ha-1) were recorded in ‘Shatabdi’, and the lowest in ‘BARI Gom 27’ (2557 and 5403 kg ha-1). By evaluating heat tolerance indices, ‘BARI Gom 30’, followed by ‘BARI Gom 29’, ‘BARI Gom 26’ and ‘Shatabdi’ were found to be tolerant to heat; whereas ‘BARI Gom 27’ and ‘BARI Gom 28’ were showed the susceptibility against the late-sown heat stress. Therefore, except for ‘BARI Gom 27’ and ‘BARI Gom 28’, the remaining four varieties (‘Shatabdi’, ‘BARI Gom 26’, ‘BARI Gom 29’ and ‘BARI Gom 30’) are recommended for cultivation in late sown condition and could be also used in a future breeding program to develop heat-tolerant varieties in future.