Basilides was a Christian gnostic who taught in Alexandria from 117 to 138 AD.
Basilides may also refer to:
- Basilides the Epicurean, (250 – c. 175 BC), philosopher
- Basilides of Tyre, mathematician
- Basilides (Stoic) (2nd century BC), philosopher
- Basilides and Potamiana (died c.205), Christian martyrs now venerated as saints
- Basilides, Cyrinus, Nabor and Nazarius (died c.303), Catholic saints
- Basilides (patricius), Byzantine official c. 527–565
- Fasilides or Basilides (1603–1667), emperor of Ethiopia
- Mária Basilides, (1886–1946), Hungarian contralto singer