- Otogelin (OTOG)
- Otopetrin 3 (OTOP3)
- Otopetrin 2 (OTOP2)
- Otopetrin 1 (OTOP1)
- Otospiralin (OTOS)
- Olfactory Marker Protein (OMP)
- Otoconin 90 (OC90)
- Oculomedin (OCLM)
- Nucleolar And Spindle Associated Protein 1 (NUSAP1)
- Nuclear Fragile X Mental Retardation Protein Interacting Protein 2 (NUFIP2)
- Nuclear Fragile X Mental Retardation Protein Interacting Protein 1 (NUFIP1)
- Neuritin 1 (NRN1)
- Neuronal PAS Domain Protein 4 (NPAS4)
- Neuronal PAS Domain Protein 3 (NPAS3)
- Neuronal PAS Domain Protein 2 (NPAS2)
