Heydar
- Ali
- Arabic language
- Azerbaijan
- Cyrillic script
- Gaidar (surname)
- Greater Iran
- Haider (disambiguation)
- Haydar
- Heidar
- Heydar Alat
- Heydar Aliyev
- Heydar Babaya Salam
- Heydar Babayev
- Heydar Baghi
- Heydar Didehban
- Heydar Ghiai
- Heydar Huseynov
- Heydar Kar
- Heydar Kola
- Heydar Moslehi
- Heydar Yaghma
- Heydar-e Posht-e Shahr
- Heydari (name)
- Iran