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Intensified by global warming, heat stress is one of the major concerns in many farmlands that severely disturb plant productivity. Plant genetic engineering by regulating heat shock proteins, RNA-binding proteins, and molecular chaperones is an efficient strategy for maintaining plant productivity under heat stress conditions. Plant performance and tolerance to heat stress are highly dependent on their balance, interactions, structural, and functional diversities. Thus, this review article is undertaken to discuss the effectiveness of these proteins in conferring tolerance to heat stress and to incentivize their coregulation to achieve better results in breeding programs in future.