N,N-二异丙基乙基胺（英语：N,N-Diisopropylethylamine，或称为Hünig碱，DIPEA或DIEA）既是一种胺也是一种有机化合物。在有机化学中通常作为碱存在。由于氮原子被两个异丙基和一个乙基屏蔽，只有足够小体积的单个质子才能与之结合。同2,2,6,6-四甲基哌啶相似，该化合物是非亲核碱，是一种没有亲核性的有机碱。Hünig碱是由化学家Siegfried Hünig命名的。

N,N-Diisopropylethylamine, or Hünig's base, DIPEA or DIEA, is an organic compound and an amine. It is used in organic chemistry as a base. Because the nitrogen atom is shielded by the two isopropyl groups and an ethyl group only a proton is small enough to easily fit. Like 2,2,6,6-tetramethylpiperidine, this compound is a good base but a poor nucleophile, which makes it a useful organic reagent. Hünig's base is named after the German chemist Siegfried Hünig. The compound is a colourless liquid.