Idris (Arabic: إدريس) may refer to:
- Cadair Idris, a mountain in Gwynedd, Wales
- Idris, a fictional dragon in Ivor the Engine
- Idris, the TARDIS personified in the Doctor Who episode "The Doctor's Wife"
- Idris (giant), giant and astronomer of Welsh tradition
- Idris (operating system), a multi-tasking, Unix-like, multi-user, real-time operating system
- Idris (prophet), Islamic prophet mentioned in the Qur'an