National Democratic Front may refer to:
- National Democratic Front (Algeria)
- National Democratic Front (Central African Republic)
- National Democratic Front (French India)
- National Democratic Front (Guyana)
- National Democratic Front (India)
- National Democratic Front (Iran)
- National Democratic Front (Mexico)
- National Democratic Front (Myanmar)
- National Democratic Front (Peru)
- National Democratic Front (Philippines)
- National Democratic Front (Romania)
- National Democratic Front (Yemen)
- National United Front of Democracy Against Dictatorship, sometimes shortened to the National Democratic Front (Thailand)
- India
Various militant groups in India: