| Honorific-Prefix: | Yang Berbahagia Dato' Haji |
| Tun Hairuddin Abu Bakar | |
| Honorific-Suffix: | DPNS |
| Native Name: | تون حيرالدين بن أبو بكر |
| Birth Place: | Negeri Sembilan, Malaysia |
| Office: | Member of the Negeri Sembilan State Executive Council |
| 1Blankname: | Menteri Besar |
| 1Namedata: | Mohamad Hasan |
| Term Start: | 22 May 2013 |
| Term End: | 12 May 2018 |
| Predecessor: | Mohammad Razi Kail |
| Successor: | Aminuddin Harun |
| Constituency: | Bagan Pinang |
| Constituency Am1: | Bagan Pinang |
| Assembly1: | Negeri Sembilan State Legislative |
| Majority1: | 6,067 (2013) 1,935 (2018) |
| Term Start1: | 5 May 2013 |
| Term End1: | 12 August 2023 |
| Predecessor1: | Mohd Isa Abdul Samad (BN–UMNO) |
| Successor1: | Abdul Fatah Zakaria (PN–PAS) |
| Office2: | Faction represented in Negeri Sembilan State Legislative Assembly |
| Subterm2: | 2013–2023 |
| Suboffice2: | Barisan Nasional |
| Citizenship: | Malaysian |
| Party: | United Malays National Organisation (UMNO) |
| Otherparty: | Barisan Nasional (BN) |
| Occupation: | Politician |
Tun Hairuddin bin Abu Bakar is a Malaysian politician who had served as Member of the Negeri Sembilan State Executive Council (EXCO) in the Barisan Nasional (BN) state administration under former Menteri Besar Mohamad Hasan from May 2013 to the collapse of the BN state administration in May 2018 and Member of the Negeri Sembilan State Legislative Assembly (MLA) for Bagan Pinang from May 2013 to August 2023. He is a member of the United Malays National Organisation (UMNO), a component party of the BN coalition.
| Constituency | Candidate | Votes | Pct | Opponent(s) | Votes | Pct | Ballots cast | Majority | Turnout | |||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2013 | N31 Bagan Pinang | (UMNO) | 10,206 | 71.15% | Ramli Ismail (PAS) | 4,139 | 28.85% | 14,720 | 6,067 | 84.90% | ||||
| 2018 | Tun Hairuddin Abu Bakar (UMNO) | 7,146 | 57.83% | Mohd Ibrahim Amanula Khan (PKR) | 5,211 | 42.17% | 12,767 | 1,935 | 80.70% | |||||