A hydrogen bond acceptor is the atom, bearing a lone pair of electrons, that attracts the polarised hydrogen atom in a hydrogen bond. It is typically a highly electronegative atom such as fluorine, oxygen, or nitrogen. The acceptor pairs with a hydrogen bond donor, the X–H group that supplies the partially positive hydrogen.

氢键受体是带有一对孤对电子、吸引氢键中极化氢原子的原子。它通常是氟、氧、氮等高电负性原子。受体与氢键给体配对,后者即提供部分带正电氢原子的 X–H 基团。