奇异重子是一种假想粒子，它们与重子皆属亚原子粒子，但它们除了重子应有的三颗夸克外亦具有额外的基本粒子。有些奇异重子比较稳定，并为大质量强相互作用粒子﹝见SIMP﹞的候选粒子。

Exotic baryons are composite particles that are bound states of four or more quarks and additional elementary particles, which may include antiquarks or gluons. An example would be pentaquarks, consisting of four quarks and one antiquark. This is to be contrasted with ordinary baryons, which are bound states of just three quarks.