求婚，是未婚情侣向对方提议结婚，并以最大的诚意来表示己方立场。在某些国家，求婚仪式是当众进行。在东亚地区，结婚是家族大事。情侣即使已互相应允结婚，男方家人仍应依传统向女方家人提亲，并请媒人说亲。不过，偶有女方家人主动向男方家人提亲的案例。

现代流行的求婚仪式是男方带同结婚戒指、鲜花，向女方亲身下跪等，不做足可能会被女方认为诚意不够。依据香港生活易网站在2010年1月进行的调查显示，在已婚或已订婚的312名港人中，有74%的受访者表示求婚一次已成功，平均求婚次数为1.13次；而求婚的平均消费为18,366港元，求婚戒指占其中八成开支。

A marriage proposal is an event where one person in a relationship asks for the other's hand in marriage. If accepted, it marks the initiation of engagement, a mutual promise of later marriage. It often has a ritual quality, sometimes involving the presentation of an engagement ring and the formal asking of a question for example "Will you marry me, ...?" In the Anglosphere it is traditional for the man to make a proposal to the woman directly while genuflecting in front of her; the man sometimes puts the engagement ring on her finger at this point, as opposed to merely offering it to her. Sometimes the proposal is intended to be a surprise. If the woman accepts the proposal, she will typically assent to the man verbally and wear the ring during the time leading up to the wedding, known as the engagement. Acceptance of the proposal is not compulsory in Western culture; a woman may decline a proposal for various reasons, and may not declare what the reasons are.