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Since the publication of the last review in 1998, the transition‐metal chemistry of boron has continued to raise unceasing interest. Boryl complexes, representing the most extensive subclass, have remained a focus of intense research, particularly for their implication in the metal‐mediated functionalization of organic substrates. Absolute novelties such as borane complexes and terminal borylene complexes have been structurally authenticated. Upon further elaboration of these compounds, the known coordination modes of boron‐based ligands have grown considerably. Combined structural and theoretical investigations have contributed to elucidate the fundamental electronic characteristics of the transition‐metal–boron bond and are leading to applications of these compounds. The most useful synthetic strategies for the generation of transition‐metal–boron bonds are highlighted here, and the most recent and …