Eponyms beginning with R
- Ranvier's crosses
- Ranvier's disks
- Ranvier's nodes
- Ranvier's plexus
- Ranvier's segment
- Ranvier's tactile disks
- Ranvier-Schnürringe (German)
- Rasmussen's aneurysm
- Rasmussen's disease
- Rasmussen's encephalitis
- Rasmussen's syndrome
- Rathke's cleft cyst
- Rathke's cyst
- Rathke's diverticulum
- Rathke's pocket
- Rathke's pouch
- Rathke's pouch cyst
- Rathke's pouch tumour
- Rathke-Tasche (German)
- Rauchfuss' triangle
- Rauchfuss-Korány-Grocco Dreieck (German)
- Ravenna's syndrome
- Rayer's disease
- Rayer's nodules
- Raymond and Guillain type