This is a list of countries by external debt to GDP, the total public and private debt owed to nonresidents repayable in internationally accepted currencies, goods, or services, where the public debt is the money or credit owed by any level of government, from central to local, and the private debt the money or credit owed by private households or private corporations based in the country under consideration.
For informational purposes, several non-sovereign entities are also included in this list.
Note that while a country may have a relatively large external debt (either in absolute or per capita terms) it could actually be a "net international creditor" if its external debt is less than the total of the external debt of other countries held by it.