Manga conventions are held in many locations around the world and are gathering places for those with an interest in manga and anime. Some conventions also include merchandise and games that are manga or anime related.

Conventions vary in size, from small events with limited attendance to others, such as Comic Market, that bring in hundreds of thousands of people. Conventions' main demographic are teenage boys and girls, and young men of university age.

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Today, the largest manga convention in the world takes place bi-annually in Tokyo, Japan, and is known as Comic Market, often shortened to Comiket, Komiketto (the romaji spelling of Comiket), or even abbreviated as CM. The event lasts for two to three days at a time and occurs during the months of August (called the Summer Komike) and December (Winter Komike). Admission is free, though the purchase of a catalog containing information about the event and the items sold is recommended.

Comic Market gives opportunities to those who create their own manga known as dojinshi (manga produced outside the mainstream manga market) to sell their works to the public. Since Comic Market was first held in December of 1975, the numbers of attendees has risen greatly to and can be as high as a quarter of a million people.

Jump Festa is another convention that is held in Japan, sponsored by Shueisha, the company responsible for making various Jump magazines, such as the popular Shûkan Shonen Janpu, released as Weekly Shonen Jump in the west. This convention is devoted to anime and manga, and during this time new manga, games, movies, merchandise, and other such releases are announced. Jump Festa has been held annually in Tokyo since 2001.

Due to manga's increasing popularity internationally, Japan is not the only country that hosts manga conventions. In fact, there are also several notable conventions across America, Canada, Europe and even in Australia.