| Jayaraj | |
| Pronunciation: | Jeyarāj |
| Gender: | Male |
| Meaning: | King of victory |
| Region: | Southern India North-eastern Sri Lanka |
| Language: | Tamil Malayalam |
| Alternative Spelling: | Jeyaraj Jayaraja Jayarajah Jayarajan |
Jayaraj or Jeyaraj (Tamil: ஜெயராஜ்' Malayalam: ജയരാജ്) is a South Indian male given name. Due to the South Indian tradition of using patronymic surnames it may also be a surname for males and females. The name literally translates to "king of victory / victory king".