1. The states that have common frontiers with Pakistan are Jammu and Kashmir, Punjab, Rajasthan, and Gujarat.
2. The states that have common frontiers with China are Jammu and Kashmir, Himachal Pradesh, Uttarakhand, Sikkim, and Arunachal Pradesh.
3. The states that have common frontiers with Myanmar are Arunachal Pradesh, Nagaland, Manipur and Mizoram.
4. The states that have common frontiers with Bangladesh are West Bengal, Assam, Meghalaya, Tripura and Mizoram,