This is a list of acts of the Northern Ireland Assembly passed in 2012. Acts of the Northern Ireland Assembly are enacted by the Northern Ireland Assembly, which has legislative authority over devolved matters in relation to Northern Ireland under the authority of the Northern Ireland Act 1998.

Acts are cited by calendar year, in the same fashion as acts of Parliament of the United Kingdom. Each act passed in a respective year is given a chapter number (abbreviated "c.") denoted by Arabic numerals, and citations are usually followed by the suffix "(N.I.)" so as to prevent confusion with acts of Parliament of the United Kingdom.

5 acts of the Northern Ireland Assembly were passed in 2012.

indicates that an act has been transcribed on Wikisource, indicates that an act is available to view at legislation.gov.uk, and indicates the location of the original act in the Parliamentary Archives.