A wedding anniversary is the anniversary of the date that a wedding took place. Couples often mark the occasion by celebrating their relationship, either privately or with a larger party. Special celebrations and gifts are often given for particular anniversary milestones. In some cultures, traditional names exist for milestone anniversaries; for instance, fifty years of marriage may be known variously as a "golden wedding anniversary", "golden anniversary" or "golden wedding".

A platinum jubilee is a celebration held to mark an anniversary. Among monarchies, it usually refers to a 70th anniversary.