In a bar, a last call (last orders) is an announcement made shortly before the bar closes for the night, informing patrons of their last chance to buy alcoholic beverages. There are various means to make the signal, like ringing a bell, flashing the lights, or announcing verbally.

Last call times are often legally mandated and vary widely globally as well as locally. Legislation's purposes include reducing late night noise in the neighborhood, traffic crashes, violence, and alcohol related health problems.

In New South Wales, there is no specified closing time, but in residential areas, bars are often required to close at midnight. In non-residential areas, some bars are open 24 hours. A six-hour daily closure period applies to new licenses (and extended hours authorizations) granted from 30 October 2008, which is nominated depending on individual and community circumstances.

During a significant part of the early 20th century, bars in Australia and New Zealand were closed at 6 p.m. by law. The resulting rush to buy drinks after work was known as the six o'clock swill.

Bar closing hours in Austria are regulated by the federated states. In most states bars must close at 4 a.m. although many places have special permits to close later. In the capital, Vienna, bars and clubs are allowed to stay open until 6 a.m. Alcohol is allowed to be served until the bar or club closes.

There is no legally mandated last call in Belgium; many bars will stay open all night.

There is no legally mandated last call in Brazil; many bars will stay open all night. Some cities have laws that require bars to close during the early morning hours.

Many bars, KTVs and nightclubs have no specific last call and will continue to sell alcohol and stay open provided there are paying customers present. During times when national security is increased (i.e. the Olympics, the 60th Anniversary of the PRC), closing times may be in effect in some cities between 1 and 2 a.m. Alcohol is sold through retailers 24 hours a day.