氮化汞，又称二氮三化汞，是一种无机化合物，化学式Hg₃N₂，为折线型分子，结构式Hg=N-Hg-N=Hg，稳定性极差，是一种感度很高的爆炸物。

氧化汞与氨气在10°C下反应，再加热到150°C，最后用20%的硝酸处理可得氮化汞。

Mercury nitride describes chemical compounds that contain mercury cations and nitrido anions. Binary mercury nitrides, e.g. stoichiometrically compounds such as Hg₃N₂, are not well characterized and are probably unstable in the condensed phase under ordinary conditions. A nitride of mercury has been reported in the form of [Hg₂N](NO₃). This reddish solid adopts a network structure consisting of NHg₄ tetrahedra linked by nitrate ligands.