| SPH | only extant member of the order Rhynchocephalia of large spiny lizard-like diapsid reptiles of coastal islands off New Zealand |
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| SPH | butterfly-shaped bone at the base of the skull |
| SPH | butterfly-shaped bone at the base of the skull |
| SPH | the irregularly shaped area on either side of the cranium where the frontal bone and the anterior tip of the parietal bone and the temporal bone and the greater wing of the sphenoid bone meet |
| SPH | the irregularly shaped area on either side of the cranium where the frontal bone and the anterior tip of the parietal bone and the temporal bone and the greater wing of the sphenoid bone meet |
| SPH | the irregularly shaped area on either side of the cranium where the frontal bone and the anterior tip of the parietal bone and the temporal bone and the greater wing of the sphenoid bone meet |
| SPH | the irregularly shaped area on either side of the cranium where the frontal bone and the anterior tip of the parietal bone and the temporal bone and the greater wing of the sphenoid bone meet |
| SPH | horsetails and related forms |
| SPH | any spherically shaped artifact |
| SPH | a particular aspect of life or activity |
| SPH | the apparent surface of the imaginary sphere on which celestial bodies appear to be projected |
| SPH | the geographical area in which one nation is very influential |