Wikipedia:Administrator_intervention_against_vandalism
There are three main processes for deleting articles, in order:
Process Usage How to do it Speedy deletion (SD) Pages that are suitable for instant deletion, being patent nonsense or pure vandalism and which can obviously be deleted on sight Either list on speedy deletions or quick-flag the article for speedy deletion using {{db|Reason}} Proposed deletion Articles whose deletion should be uncontroversial but which don't meet the "utter rubbish" criteria for speedy deletion. This is often used for articles which appear to have genuine content but which the deleter feels are not suitable content for Wikipedia, such as advertising, vanity articles, and the like Flag with {{subst:prod|Reason}} which will also place it into Category:Proposed deletion; if the deletion is not contested by anyone for seven days it can be deleted at an administrator's discretion. Contested prods may be moved to AFD for fuller discussion Articles for deletion (AFD) A five-day public debate and discussion on the merits of the article and its best treatment. Applicable to all articles where deletion is unsure, seriously contested, or may need debate, and all borderline or controversial cases. List page on Articles for deletion, following the process on that page and here is the template {{subst:AFD}}
Other types of deletion have their own similar processes, described on pages such as: