人际关系是指社会人群中因交往而构成的相互依存和相互联系的社会关系，又称为社交、人缘，属于社会学的范畴，也被称为「人际交往」，包括朋友关系、同学关系、师生关系、雇佣关系、战友关系、同事及领导与被领导关系等。人是社会动物，每个个体均有其独特之思想、背景、态度、个性、行为模式及价值观，然而人际关系对每个人的情绪、生活、工作都有很大的影响，甚至对组织气氛、组织沟通、组织运作、组织效率及个人与组织之关系均有极大的影响。

An interpersonal relationship is a strong, deep, or close association or acquaintance between two or more people that may range in duration from brief to enduring. This association may be based on inference, love, solidarity, regular business interactions, or some other type of social commitment. Interpersonal relationships are formed in the context of social, cultural and other influences. The context can vary from family or kinship relations, friendship, marriage, relations with associates, work, clubs, neighborhoods, and places of worship. They may be regulated by law, custom, or mutual agreement, and are the basis of social groups and society as a whole.