The cabinet is a special group of the most senior members of the government. The team of 20 or so ministers is chosen by the prime minister.
Currently, there are 23 members of the cabinet, including the prime minister.
This afternoon, Boris Johnson - who will take over as the new leader of the government today - is expected to announce who some people in his new cabinet will be.
Most people in the cabinet are in charge of a particular area of public life - for example, health, transport, the environment or how the country defends itself.
It is possible to have cabinet members who aren't in charge of something specific. These are called 'ministers without portfolio'.
Members of the cabinet usually meet once a week to talk about the most important issues for the government.