Mohammadabad or Muhammadabad (Urdu: محمد آباد) may refer to:
- Mohammadabad, Farrukhabad, India
- Mohammadabad, Ghazipur, India
- Mohammadabad, Iran (disambiguation), several places
- Mohammadabad, Isfahan, Iran
- Mahmudabad, Malard, Iran
- Mohammadabad, Rey, Iran
- Mohammadabad, Sindh, Pakistan