标量玻色子（英语：Scalar boson）是指自旋为0的玻色子。标量玻色子的名称起源于量子场论，指的是洛伦兹变换下特定的变换性质。

A scalar boson is a boson whose spin equals zero. Boson means that it has an integer-valued spin; the scalar fixes this value to 0.

The name "scalar boson" arises from quantum field theory. It refers to the particular transformation properties under Lorentz transformation.