转移金属化（英语：transmetalation或transmetallation）是一种配体在金属原子间发生转移的有机金属反应。该反应典型的形式为M₁-R + M₂-R' → M₁-R' + M₂-R，R和R'包括但不限于烷基、芳基、炔基、烯丙基、卤素或拟卤素基团。鉴于热力学和动力学因素，这一反应通常是不可逆的。热力学上，金属的电负性有利于反应的进行；动力学上，涉及的两种金属如存在空轨道，也有利于反应进行。 转移金属化包括不同的类型，即氧化还原-转移金属化和氧化还原转移金属化/配体交换。转移金属化过程中，金属-碳键被激活，新的金属-碳键形成。转移金属化通常应用于催化剂、主族元素化合物合成和过渡金属化合物的合成。

Transmetalation (alt. spelling: transmetallation) is a type of organometallic reaction that involves the transfer of ligands from one metal to another. It has the general form:

where R and R′ can be, but are not limited to, an alkyl, aryl, alkynyl, allyl, halogen, or pseudo-halogen group. The reaction is usually an irreversible process due to thermodynamic and kinetic reasons. Thermodynamics will favor the reaction based on the electronegativities of the metals and kinetics will favor the reaction if there are empty orbitals on both metals. There are different types of transmetalation including redox-transmetalation and redox-transmetalation/ligand exchange. During transmetalation the metal-carbon bond is activated, leading to the formation of new metal-carbon bonds. Transmetalation is commonly used in catalysis, synthesis of main group complexes, and synthesis of transition metal complexes.