“Res inter alios acta alteri nocere non debet” is a legal maxim in Latin which means “a transaction between two parties should not harm a third party”. This principle is commonly used in the context of contract law and tort law to suggest that a person who is not part of a particular agreement or transaction should not suffer harm or be obligated by its terms. It highlights the concept that people should not be negatively affected by actions or agreements they were not directly involved in.