GK Notes : List of Important International Boundary Lines.
| S. No. | Name of the International Boundary Line | Names of the Related Countries |
| 1 | Durand Line (drawn in 1896) | Pakistan and Afghanistan (It was determined by Sir Motiger Durand of Britain). Afghanistan doesn’t recognize it as the International Frontier. |
| 2 | Radcliff Line (drawn in 1947) | India and Pakistan (It was determined by Sir Redcliff on 15th August 1947. |
| 3 | McMohan Line (drawn in 1914) | India and China (Arunachal Pradesh Region). It was determined by Sir McMohan of Britain through a treaty, in 1914. Its length is 700 miles. |
| 4 | 24th Parallel | Pakistan claims that it is boundary between India and Pakistan in Rann of Katchh but India does not accept it. |
| 5 | 17th Parallel | North Vietnam and South Vietnam |
| 6 | 38th Parallel | North Korea and South Korea |
| 7 | 49th Parallel | Canada and USA |
| 8 | Hindenberg Line | Germany and Poland (determined during the First World War) |
| 9 | Maginot Line | Germany and France |
| 10 | Seigfried Line | Fortification between Germany and France. It was constructed by Germany in the forms of walls, minerals and army posts between France and former Germany before the World War II. |
| 11 | Oder-Nisse (Oder-Neisse) Line |
Germany and Poland |
