Translation guide
Comic Market (Comiket) is a large doujinshi (self-published works) convention held in Tokyo. It is a proper noun referring to the event itself.
Referring to the Comic Market convention
The full official name, used in formal contexts or when clarity is needed.
コミックマーケットは年に2回開催されます。
Comic Market is held twice a year.
The common abbreviation, used in casual conversation and among fans.
次のコミケはいつ？
When is the next Comiket?
An older abbreviation, still occasionally used.
In most casual contexts, コミケ is the natural choice. Use コミックマーケット in formal writing or when introducing the event to someone unfamiliar with it.
コミケットのカタログを買った。
I bought the Comiket catalog.