| The Marriage (Northern Ireland) Order 2003 | 2003 No. 413 | Order | words substituted | Health and Social Care (Reform) Act (Northern Ireland) 2009 | 2009 c. 1 | Sch. 6 para. 1(1)(c) | Yes | |
| The Marriage (Northern Ireland) Order 2003 | 2003 No. 413 | Order | modified | The Marriage and Civil Partnership (Northern Ireland) (No. 2) Regulations 2020 | 2020 No. 1143 | reg. 15(1) | Yes | |
| The Marriage (Northern Ireland) Order 2003 | 2003 No. 413 | art. 2(2) | words inserted | The Referral and Investigation of Proposed Marriages and Civil Partnerships (Northern Ireland and Miscellaneous Provisions) Order 2015 | 2015 No. 395 | Sch. 1 para. 2(a) | Yes | |
| The Marriage (Northern Ireland) Order 2003 | 2003 No. 413 | art. 2(2) | words inserted | The Referral and Investigation of Proposed Marriages and Civil Partnerships (Northern Ireland and Miscellaneous Provisions) Order 2015 | 2015 No. 395 | Sch. 1 para. 2(b) | Yes | |
| The Marriage (Northern Ireland) Order 2003 | 2003 No. 413 | art. 2(2) | words inserted | The Referral and Investigation of Proposed Marriages and Civil Partnerships (Northern Ireland and Miscellaneous Provisions) Order 2015 | 2015 No. 395 | Sch. 1 para. 2(c) | Yes | |
| The Marriage (Northern Ireland) Order 2003 | 2003 No. 413 | art. 2(2) | words omitted | The Immigration, Nationality and Asylum (EU Exit) Regulations 2019 | 2019 No. 745 | reg. 13 | Yes | |
| The Marriage (Northern Ireland) Order 2003 | 2003 No. 413 | art. 2(2) | words inserted | The Marriage and Civil Partnership (Northern Ireland) Regulations 2020 | 2020 No. 742 | reg. 4(2) | Yes | |
| The Marriage (Northern Ireland) Order 2003 | 2003 No. 413 | art. 2(2) | words inserted | The Immigration and Social Security Co-ordination (EU Withdrawal) Act 2020 (Consequential, Saving, Transitional and Transitory Provisions) (EU Exit) Regulations 2020 | 2020 No. 1309 | reg. 14(2)(a) | Yes | |
| The Marriage (Northern Ireland) Order 2003 | 2003 No. 413 | art. 2(2) | words omitted | The Immigration and Social Security Co-ordination (EU Withdrawal) Act 2020 (Consequential, Saving, Transitional and Transitory Provisions) (EU Exit) Regulations 2020 | 2020 No. 1309 | reg. 14(2)(b) | Yes | |
| The Marriage (Northern Ireland) Order 2003 | 2003 No. 413 | art. 3(1)(2)art. 3(3)(a)(4) | coming into force | Marriage (2003 Order) (Commencement) Order (Northern Ireland) 2003 | 2003 No. 466 | art. 2(b) | Yes | |
| The Marriage (Northern Ireland) Order 2003 | 2003 No. 413 | art. 3(3)(b) | coming into force | Marriage (2003 Order) (Commencement) Order (Northern Ireland) 2003 | 2003 No. 466 | art. 2(a) | Yes | |
| The Marriage (Northern Ireland) Order 2003 | 2003 No. 413 | art. 3A-3E | inserted | The Referral and Investigation of Proposed Marriages and Civil Partnerships (Northern Ireland and Miscellaneous Provisions) Order 2015 | 2015 No. 395 | Sch. 1 para. 3 | Yes | |
| The Marriage (Northern Ireland) Order 2003 | 2003 No. 413 | art. 3A(9) | applied | The Sham Marriage and Civil Partnership (Scotland and Northern Ireland) (Administrative) Regulations 2015 | 2015 No. 404 | reg. 18(4)(a) | Yes | |
| The Marriage (Northern Ireland) Order 2003 | 2003 No. 413 | art. 4 | coming into force | Marriage (2003 Order) (Commencement) Order (Northern Ireland) 2003 | 2003 No. 466 | art. 2(b) | Yes | |
| The Marriage (Northern Ireland) Order 2003 | 2003 No. 413 | art. 4(2A)(2B) | inserted | The Referral and Investigation of Proposed Marriages and Civil Partnerships (Northern Ireland and Miscellaneous Provisions) Order 2015 | 2015 No. 395 | Sch. 1 para. 5(1) | Yes | |
| The Marriage (Northern Ireland) Order 2003 | 2003 No. 413 | art. 5 | coming into force | Marriage (2003 Order) (Commencement) Order (Northern Ireland) 2003 | 2003 No. 466 | art. 2(b) | Yes | |
| The Marriage (Northern Ireland) Order 2003 | 2003 No. 413 | art. 6 | coming into force | Marriage (2003 Order) (Commencement) Order (Northern Ireland) 2003 | 2003 No. 466 | art. 2(b) | Yes | |
| The Marriage (Northern Ireland) Order 2003 | 2003 No. 413 | art. 6(6) | word inserted | The Marriage (Same-sex Couples) and Civil Partnership (Opposite-sex Couples) (Northern Ireland) Regulations 2019 | 2019 No. 1514 | reg. 3(1)(b) | Yes | |
| The Marriage (Northern Ireland) Order 2003 | 2003 No. 413 | art. 7 | coming into force | Marriage (2003 Order) (Commencement) Order (Northern Ireland) 2003 | 2003 No. 466 | art. 2(b) | Yes | |
| The Marriage (Northern Ireland) Order 2003 | 2003 No. 413 | art. 7(3) | word substituted | The Marriage and Civil Partnership (Northern Ireland) Regulations 2020 | 2020 No. 742 | reg. 9(3)(a) | Yes | |
| The Marriage (Northern Ireland) Order 2003 | 2003 No. 413 | art. 7(7) | inserted | The Marriage and Civil Partnership (Northern Ireland) Regulations 2020 | 2020 No. 742 | reg. 9(3)(b) | Yes | |
| The Marriage (Northern Ireland) Order 2003 | 2003 No. 413 | art. 7A | inserted | The Referral and Investigation of Proposed Marriages and Civil Partnerships (Northern Ireland and Miscellaneous Provisions) Order 2015 | 2015 No. 395 | Sch. 1 para. 6(1) | Yes | |
| The Marriage (Northern Ireland) Order 2003 | 2003 No. 413 | art. 8 | coming into force | Marriage (2003 Order) (Commencement) Order (Northern Ireland) 2003 | 2003 No. 466 | art. 2(b) | Yes | |
| The Marriage (Northern Ireland) Order 2003 | 2003 No. 413 | art. 9 | coming into force | Marriage (2003 Order) (Commencement) Order (Northern Ireland) 2003 | 2003 No. 466 | art. 2(b) | Yes | |
| The Marriage (Northern Ireland) Order 2003 | 2003 No. 413 | art. 9 | words inserted | The Marriage (Same-sex Couples) and Civil Partnership (Opposite-sex Couples) (Northern Ireland) Regulations 2019 | 2019 No. 1514 | reg. 3(2) | Yes | |
| The Marriage (Northern Ireland) Order 2003 | 2003 No. 413 | art. 9 | words omitted | The Marriage and Civil Partnership (Northern Ireland) Regulations 2020 | 2020 No. 742 | reg. 3(1) | Yes | |
| The Marriage (Northern Ireland) Order 2003 | 2003 No. 413 | art. 9A | inserted | The Marriage and Civil Partnership (Northern Ireland) Regulations 2020 | 2020 No. 742 | reg. 4(3) | Yes | |
| The Marriage (Northern Ireland) Order 2003 | 2003 No. 413 | art. 10 | coming into force | Marriage (2003 Order) (Commencement) Order (Northern Ireland) 2003 | 2003 No. 466 | art. 2(b) | Yes | |
| The Marriage (Northern Ireland) Order 2003 | 2003 No. 413 | art. 10(1A)-(1D) | inserted | The Marriage and Civil Partnership (Northern Ireland) Regulations 2020 | 2020 No. 742 | reg. 5(2) | Yes | |
| The Marriage (Northern Ireland) Order 2003 | 2003 No. 413 | art. 10(2)(b) | omitted | The Marriage and Civil Partnership (Northern Ireland) Regulations 2020 | 2020 No. 742 | reg. 6(2) | Yes | |
| The Marriage (Northern Ireland) Order 2003 | 2003 No. 413 | art. 10(2A)(2B) | inserted | The Marriage and Civil Partnership (Northern Ireland) Regulations 2020 | 2020 No. 742 | reg. 6(3) | Yes | |
| The Marriage (Northern Ireland) Order 2003 | 2003 No. 413 | art. 10(3) | word substituted | The Marriage and Civil Partnership (Northern Ireland) Regulations 2020 | 2020 No. 742 | reg. 6(4) | Yes | |
| The Marriage (Northern Ireland) Order 2003 | 2003 No. 413 | art. 10(3A) | inserted | The Marriage and Civil Partnership (Northern Ireland) Regulations 2020 | 2020 No. 742 | reg. 6(5) | Yes | |
| The Marriage (Northern Ireland) Order 2003 | 2003 No. 413 | art. 11 | coming into force | Marriage (2003 Order) (Commencement) Order (Northern Ireland) 2003 | 2003 No. 466 | art. 2(b) | Yes | |
| The Marriage (Northern Ireland) Order 2003 | 2003 No. 413 | art. 11(3) | words substituted | The Marriage and Civil Partnership (Northern Ireland) Regulations 2020 | 2020 No. 742 | reg. 5(3) | Yes | |
| The Marriage (Northern Ireland) Order 2003 | 2003 No. 413 | art. 11(3A)(3B) | inserted | The Marriage and Civil Partnership (Northern Ireland) Regulations 2020 | 2020 No. 742 | reg. 5(4) | Yes | |
| The Marriage (Northern Ireland) Order 2003 | 2003 No. 413 | art. 12 | coming into force | Marriage (2003 Order) (Commencement) Order (Northern Ireland) 2003 | 2003 No. 466 | art. 2(b) | Yes | |
| The Marriage (Northern Ireland) Order 2003 | 2003 No. 413 | art. 12(1)(c) | words inserted | The Marriage and Civil Partnership (Northern Ireland) Regulations 2020 | 2020 No. 742 | reg. 7(2)(a) | Yes | |
| The Marriage (Northern Ireland) Order 2003 | 2003 No. 413 | art. 12(1)(ca) | inserted | The Marriage and Civil Partnership (Northern Ireland) Regulations 2020 | 2020 No. 742 | reg. 7(2)(b) | Yes | |
| The Marriage (Northern Ireland) Order 2003 | 2003 No. 413 | art. 12(4) | inserted | The Marriage and Civil Partnership (Northern Ireland) Regulations 2020 | 2020 No. 742 | reg. 7(3) | Yes | |
| The Marriage (Northern Ireland) Order 2003 | 2003 No. 413 | art. 13 | coming into force | Marriage (2003 Order) (Commencement) Order (Northern Ireland) 2003 | 2003 No. 466 | art. 2(b) | Yes | |
| The Marriage (Northern Ireland) Order 2003 | 2003 No. 413 | art. 13(2A) | inserted | The Marriage and Civil Partnership (Northern Ireland) Regulations 2020 | 2020 No. 742 | reg. 7(4) | Yes | |
| The Marriage (Northern Ireland) Order 2003 | 2003 No. 413 | art. 14 | coming into force | Marriage (2003 Order) (Commencement) Order (Northern Ireland) 2003 | 2003 No. 466 | art. 2(b) | Yes | |
| The Marriage (Northern Ireland) Order 2003 | 2003 No. 413 | art. 14(1A) | inserted | The Marriage and Civil Partnership (Northern Ireland) Regulations 2020 | 2020 No. 742 | reg. 8(2) | Yes | |
| The Marriage (Northern Ireland) Order 2003 | 2003 No. 413 | art. 14(2A)-(2D) | inserted | The Marriage and Civil Partnership (Northern Ireland) Regulations 2020 | 2020 No. 742 | reg. 8(3) | Yes | |
| The Marriage (Northern Ireland) Order 2003 | 2003 No. 413 | art. 15 | coming into force | Marriage (2003 Order) (Commencement) Order (Northern Ireland) 2003 | 2003 No. 466 | art. 2(b) | Yes | |
| The Marriage (Northern Ireland) Order 2003 | 2003 No. 413 | art. 15(2)(b) | words inserted | The Marriage and Civil Partnership (Northern Ireland) Regulations 2020 | 2020 No. 742 | reg. 6(6) | Yes | |
| The Marriage (Northern Ireland) Order 2003 | 2003 No. 413 | art. 15(3)-(5) | inserted | The Marriage and Civil Partnership (Northern Ireland) Regulations 2020 | 2020 No. 742 | reg. 9(2) | Yes | |
| The Marriage (Northern Ireland) Order 2003 | 2003 No. 413 | art. 16 | coming into force | Marriage (2003 Order) (Commencement) Order (Northern Ireland) 2003 | 2003 No. 466 | art. 2(b) | Yes | |
| The Marriage (Northern Ireland) Order 2003 | 2003 No. 413 | art. 17 | coming into force | Marriage (2003 Order) (Commencement) Order (Northern Ireland) 2003 | 2003 No. 466 | art. 2(b) | Yes | |