India’s Border Countries
| Name of the country | Length of the border |
| Bangladesh | 4096.7 |
| China | 3488 |
| Pakistan | 3323 |
| Nepal | 1751 |
| Myanmar | 1643 |
| Bhutan | 699 |
| Afghanistan | 106 |
| Total | 15106.7 |
- Bangladesh
- Shares the longest border with India.
- Name of Border – Radcliffe line
- Indian States Bordering Bangladesh – Assam, Tripura, Meghalaya, and West Bengal. West Bengal is the Indian state which shares the longest border between India and Bangladesh.
- Existing Disputes
- Comilla – Tripura Land Dispute
- Teesta River water sharing dispute
- Settled Disputes
- Transfer of territories between India and Bangladesh by the 100th Constitutional Amendment Act 2015, where India received 51 enclaves and Bangladesh received 111 enclaves in Assam, Meghalaya, Tripura, and West Bengal.
- China
- Shares the second-longest border with India.
- Name of Border – McMahon Line separates the Eastern Indian States from China. At present, the demarcation in the Aksai Chin region is called the Line of Actual Control (LAC) and it is under dispute.
- Indian States or UTs bordering China – Jammu and Kashmir, Ladakh, Himachal Pradesh, Uttarakhand, Sikkim, and Arunachal Pradesh. Arunachal Pradesh shares the longest border with China.
- Disputed Regions
- Western Sector – Aksai Chin region
- Eastern Sector – Arunachal Pradesh region
- Pakistan
- Shares the third longest border with India.
- Name of Border – Radcliffe line from Gujarat to the South of Pak-occupied Kashmir. The Pak-occupied Kashmir border is called the Line of Control (LOC)
- Indian States Bordering Pakistan – Punjab, Rajasthan, Gujarat and Jammu & Kashmir, and Ladakh. Jammu and Kashmir has the longest border with Pakistan.
- Disputed Regions
- Northern Region – Jammu and Kashmir, Pakistan-occupied Kashmir and Gilgit-Baltistan, Siachen Glacier.
- Western Region – Sir Creek region
- Nepal
- Sunauli is the name traditionally given to the border crossing between India and Nepal and it is as per the Sugauli treaty signed between the British and Nepal in 1816.
- Indian States Bordering Nepal – Uttarakhand, Uttar Pradesh, Bihar, West Bengal, and Sikkim.
- Disputed Regions – Major areas of dispute between India and Nepal are Kalapani, Limpiyadhura, Lipulekh, Susta, Mechi, and Tanakpur.
- Bhutan
- Name of Border – Phuentsholing is a popular land border crossing between India and Bhutan, and is commonly seen on tour itineraries.
- Indian states bordering Bhutan – West Bengal, Sikkim, Assam and Arunachal Pradesh.