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|Look up presenter or host in Wiktionary, the free dictionary.|
A presenter, host, or hostess, is a person or organization responsible for the running of a public event. A museum or university, for example, may be the presenter or host of an exhibit. In films, a presenter (but not a host) is a usually well-known executive producer credited with introducing a film or filmmaker to a larger audience.
In broadcast media a presenter is, especially in British English, the person who hosts, narrates, or otherwise takes the main role in presenting a radio or television programme.
Television presenter 
A television presenter is a person who introduces or hosts television programmes. Nowadays it is common for minor celebrities in other fields to take on this role, but there are also a number of people who have made their name solely within the field of presenting, particularly within children's television series to become a television personality.
Some presenters may double as an actor, model, singer, comedian etc. Others may be subject matter experts, such as scientists or politicians, serving as presenters for a programme about their field of expertise (for instance, David Attenborough). Some are celebrities who have made their name in one area, then leverage their fame to get involved in other areas. Examples of this latter group include British comedian Michael Palin who now presents programmes about travel (such as Around the World in 80 Days), and Alan Alda, who has presented Scientific American Frontiers for over a decade.
Radio presenter 
||It has been suggested that Radio personality be merged into this article. (Discuss) Proposed since September 2012.|
Broadly speaking, a radio presenter (often, especially in American English, radio personality) is the same as a television presenter, except that they present radio programs instead of television programs. Big name presenters in the UK include Ken Bruce, Tony Blackburn, Simon Mayo, Steve Wright (DJ), Scottie McClue, Mark Radcliffe, Chris Evans and Clint Boon.
News presenter 
Sports presenter 
A sports commentator (also sports announcer, sports broadcaster, sportscaster, or sports presenter) is a type of journalist on radio and/or television who specializes in reporting or commentating on sporting events. Sportscasting is often done live.
Weather presenter 
- "Public Speaking Glossary: Glossary K - O". public-speaking-course.org.