Tree improvement is aimed at excelling genetic makeup and productivity of trees to meet the evolving ecological and economic demands. Though conventional tree improvement techniques have served better, however, their intrinsic limitations impede further progress. Biotechnology tools offer a revolutionary path forward in tree improvement, addressing limitations of conventional methods and opening doors to accelerate breeding, precise trait selection, and various conservational efforts. This chapter explores the paradigm shift occurring in tree improvement by harnessing the biotechnological tools including molecular markers, genetic transformation, tissue culture, genomic sequencing, and marker-assisted selection (MAS). Each tool is discussed in depth, elucidating its applications and contributions to the realm of tree improvement. Molecular markers, such as SSRs and SNPs, have revolutionized tree improvement by enabling precise genetic mapping and diversity analysis. Genetic transformation involves introduction of desirable traits such as disease resistance and enhanced wood quality, along with micropropagation gained more importance in the commercial sector. Tree genome sequencing has provided invaluable insights into tree genetics and breeding, facilitating identification of beneficial genes and genomic regions which facilitated MAS. Despite ethical, regulatory, and cost-related challenges, potential biotechnological tools in tree improvement remain undeniable. Biotechnological advances continue to unfold and uphold the promise of revolutionizing tree cultivation and management.