重力微子（英语：Gravitino）为结合广义相对论与超对称的超引力理论所预言的一个粒子。其为重力子的超对称伴粒子，是一规范费米子。目前还是一种假想粒子，也被提议为暗物质的候选者。

若其存在，其为自旋⁄₂的费米子，遵守哈希塔-史温格方程序。重力微子场通常写作ψ_μα，其中μ = 0,1,2,3为四维矢量指标，而α = 1,2为旋量指标。当μ = 0，会得到负的范数模，一如其他自旋1以上的无质量粒子。这结果是非物理性的；为了符合幺正性，必需存在规范对称来抵销这些模：δψ_μα = ∂_με_α，其中ε_α(x)为时空的旋量函数。此一规范对称性是局域的超对称转换，而所得理论为超重力。

In supergravity theories combining general relativity and supersymmetry, the gravitino (G͂) is the gauge fermion supersymmetric partner of the hypothesized graviton. It has been suggested as a candidate for dark matter.

If it exists, it is a fermion of spin ⁄₂ and therefore obeys the Rarita-Schwinger equation. The gravitino field is conventionally written as ψ_μα with μ = 0,1,2,3 a four-vector index and α = 1,2 a spinor index. For μ = 0 one would get negative norm modes, as with every massless particle of spin 1 or higher. These modes are unphysical, and for consistency there must be a gauge symmetry which cancels these modes: δψ_μα = ∂_με_α where ε_α(x) is a spinor function of spacetime. This gauge symmetry is a local supersymmetry transformation, and the resulting theory is supergravity.