The occipitomastoid suture, or occipitotemporal suture, is the cranial suture between the occipital bone and the mastoid portion of the temporal bone.

It is continuous with the lambdoidal suture.

• Jugular foramen

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  Animation. Occipitomastoid suture shown in red.
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  Temporal bones and occipital bone, seen from inside.
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  Base of skull. Inferior surface.
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  Base of skull. Inferior surface.

This article incorporates text in the public domain from page 183 of the 20th edition of Gray's Anatomy (1918)

• "Anatomy diagram: 34256.000-2". Roche Lexicon - illustrated navigator. Elsevier. Archived from the original on 2013-06-11.
• "Anatomy diagram: 34257.000-1". Roche Lexicon - illustrated navigator. Elsevier. Archived from the original on 2012-07-22.
• "Anatomy diagram: 34257.000-2". Roche Lexicon - illustrated navigator. Elsevier. Archived from the original on 2013-06-22.