Debtor

[Sarah]

One who owes a debt; one who is indebted; -- correlative tocreditor.[I 'll] bring your latter hazard back again, And thankfully restdebtor for the first. Shak.In Athens an insolvent debtor became slave to his creditor. Mitford.Debtors for our lives to you. Tennyson.

[Sarah]

One who owes you, most likely monetarily.

[Jason Yan]

A person, country, or organization that owes money.

[PussyCat]

someone who owes money