This is a list of English prepositions.

The following are single-word prepositions that can take a noun phrase complement following the preposition. Prepositions in this section may also take other kinds of complements in addition to noun phrase complements. Prepositions marked with an asterisk can be used transitively or intransitively; that is, they can take noun phrase complements (e.g., he was in the house) or not (e.g., he was in).

The following are single-word intransitive prepositions. This portion of the list includes only prepositions that are always intransitive; prepositions that can occur with or without noun phrase complements (that is, transitively or intransitively) are listed with the prototypical prepositions. Note that dictionaries and grammars informed by concepts from traditional grammar may categorize these intransitive prepositions as adverbs.

The following are single-word prepositions that take clauses as complements. Prepositions marked with an asterisk in this section can only take non-finite clauses as complements. Note that dictionaries and grammars informed by concepts from traditional grammar may categorize these conjunctive prepositions as subordinating conjunctions.

The following are postpositions, prepositions whose complements typically precede them. Note that some grammars classify prepositions and postpositions as different kinds of adpositions while other grammars categorize both under the heading of the more common variety in the language.

The following are prepositions that consist of multiple words. They are categorized according to their structure.

English has many idiomatic expressions that act as prepositions that can be analyzed as a preposition followed by a noun (sometimes preceded by the definite or, occasionally, indefinite article) followed by another preposition. Common examples include:

The following complex prepositions do not follow either of the common structures for complex prepositions.