退休金（英语：Pension）指的是一个人因为年龄或其他因素从职场退出时，公司或雇主必须给予退休雇员的一笔较大额酬劳。这笔金额，雇员可以选择要一次提领全额，或是分期以年金方式领取。

退休在不同的国家及职业有不同的法定年龄或工作年资，满此年龄或年资的职员，被视为应该退出职场，将位置让给年轻人。此时雇主必须给予一笔大额金钱作为劳工劳苦一生的奖励，并以此作为不工作后的养老生活费和医疗费来源。

各国退休金可分三种型式：以受雇者在职时缴纳退休保险为财源的年金、国家出资给付的年金与残障年金。

A pension is a fund into which a sum of money is added during an employee's employment years, and from which payments are drawn to support the person's retirement from work in the form of periodic payments. A pension may be a "defined benefit plan" where a fixed sum is paid regularly to a person, or a "defined contribution plan" under which a fixed sum is invested and then becomes available at retirement age. Pensions should not be confused with severance pay; the former is usually paid in regular installments for life after retirement, while the latter is typically paid as a fixed amount after involuntary termination of employment prior to retirement.