伏隔核（拉丁文：nucleus accumbens，简写记号：NAcc）也被称为依伏神经核，是一组波纹体中的神经元. 在大脑的奖赏, 快乐, 笑, 成瘾, 侵犯, 恐惧, 以及安慰剂效果等活动中起重要作用.

大脑的每侧半球各有一个伏隔核. 它位于尾状核头部、壳核的前部，侧面与透明隔相接.伏隔核与嗅结节组成了腹侧纹状体, 也是基底核的一部分.

伏隔核可以分作两部分：伏隔核的核与伏隔核的壳. 两个结构有不同的形态和功能.

The nucleus accumbens (NAc or NAcc), also known as the accumbens nucleus or as the nucleus accumbens septi (Latin for nucleus adjacent to the septum) is a region in the basal forebrain rostral to the preoptic area of the hypothalamus. The nucleus accumbens and the olfactory tubercle collectively form the ventral striatum, which is part of the basal ganglia. Each cerebral hemisphere has its own nucleus accumbens, which can be divided into two structures: the nucleus accumbens core and the nucleus accumbens shell. These substructures have different morphology and functions.