There are multiple definitions - click on the translation that matches your context.

Schuldner

Substantiv

full

debtor

noun

Comparative law notes

Germany

In the context of a monetary debt, the Schuldner and Debtor are near functional equivalents. Otherwise, the term Schuldner is rather abstract and refers to a person (obligee) who owes an obligation in a binding legal relationship created by contact or law (an obligatio). See Wikipedia "Law of obligations" for good explanation.

Definitions of debtor

English

someone or something that owes money

A court in Thailand has declared the country's largest debtor, Thai Petrochemical Industry, bankrupt.