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A panel is a longitudinal statistical study in which one group of individuals are interviewed at intervals over a given period of time.

Panel (band), a Welsh musical group

The Panel is an Australian talk show.

The Panel (Ireland) is an Irish talk show.

A control panel which is a flat area containing controls and indicators. Commonly found in aircraft but may be associated with the operation of any machinery.

A breaker panel which is a flat area containing electrical circuit breakers.

A thing that blocks one area from another. It is usually made up of thin sheet metal.

A flat or sculptured area that is part of a larger structure such as a piece of furniture or one element of a multi-panel screen.

A committee or jury used to decide some matter. In a legal context it may refer to a subset of a full set of appeal court judges, in contrast to an En banc hearing, which involves them all.
In accident investigations, a full investigation may involve sub-panels with expertise in differing areas, in the aircraft context perhaps covering avionics, structures, engines and so on.

One of several objects in computer software (a widget or a control panel).

One element of a multi-element piece of art, such as a triptych, or a piece of sequential art such as a graphic novel or comic strip.

In telephony is a short name used to refer to a Panel Switch, a type of electromechanical telephone switching system developed by the Bell System in the 1920s.

A part of a structural insulated panel building system for construction.

A committee in the Legislative Council of Hong Kong specialises on specific areas, known elsewhere as select committee or standing committee