莫氏不连续面，简称莫霍面，是地球的地壳与地函的分界面。莫氏不连续面首先在1909年由克罗地亚地震学家莫霍洛维奇（Andrija Mohorovičić）发现。他观察到地震波（特别是P波）在此处波速会突然变慢。

莫氏不连续面的位置不定，可浅至中洋脊下方约5公里处，也可深至大陆地壳下方约75公里处。

1950年代晚期到1960年代早期之间，美国国家科学基金会（National Science Foundation）运行委员会（Executive Committee）曾采纳一项提案，计划在海洋的海床上钻孔以到达此处。这个计划称为Project Mohole。然而，该计划从来没有得到足够的支持，该提案也在1967年时被美国国会取消。 2007年9月，全球最大的日本海洋探测船“地球号”开始在南海海槽相对较薄的海层勘探，目标将是莫氏不连续面。整项计划预计到2012年完成。

The Mohorovičić discontinuity (Croatian pronunciation: [moxorôʋiːt͡ʃit͡ɕ]), usually referred to as the Moho, is the boundary between the Earth's crust and the mantle. Named after the pioneering Croatian seismologist Andrija Mohorovičić, the Moho separates both the oceanic crust and continental crust from underlying mantle. The Moho lies almost entirely within the lithosphere; only beneath mid-ocean ridges does it define the lithosphere–asthenosphere boundary. The Mohorovičić discontinuity was first identified in 1909 by Mohorovičić, when he observed that seismograms from shallow-focus earthquakes had two sets of P-waves and S-waves, one that followed a direct path near the Earth's surface and the other refracted by a high-velocity medium.