Eponyms beginning with S
- Smith's disease (Carl Smith)
- Smith's disease (Eustace Smith)
- Smith's fracture (Robert William Smith)
- Smith's operation (Henry Smith)
- Smith's syndrome
- Smith-Fineman-Myers syndrome (Richard D. Smith)
- Smith-Fischer bronchial gland tuberculosis
- Smith-Lemli-Opitz syndrome I (David W. Smith)
- Smith-Lemli-Opitz syndrome II (David W. Smith)
- Smith-Lemli-Opitz syndrome type III
- Smith-Magenis syndrome (Ann C. M. Smith)
- Smith-McCort dwarfism
- Smith-McCort dwarfism (Roy Smith)
- Smith-McCort syndrome
- Smith-Petersen's method
- Smith-Petersen's nail or pin
- Smith-Strang disease
- Smith-Theiler-Schachenmann syndrome (David W. Smith)
- Smith-Thévenard syndrome
- Smith’s keratoacanthoma (John Ferguson Smith)
- Smith’s syndrome
- Smith’s syndrome
- Smyth-Caffey syndrome
- Snapper-Saltzman test
- Sneddon syndrome