| Honorific Prefix: | Yang Berbahagia Datin Sri |
| Native Name: | Malay: {{Script|Arab|مهيني زين العابدين |
| Office: | Spouse of the Prime Minister of Malaysia |
| Term Label: | In role |
| Term Start: | 21 August 2021 |
| Term End: | 24 November 2022 |
| Primeminister: | Ismail Sabri Yaakob |
| Predecessor: | Noorainee Abdul Rahman |
| Successor: | Wan Azizah Wan Ismail |
| Office1: | Spouse of the Deputy Prime Minister of Malaysia |
| Term Label1: | In role |
| Monarch1: | Abdullah |
| 1Blankname1: | Deputy Prime Minister |
| 1Namedata1: | Ismail Sabri Yaakob |
| Term Start1: | 7 July 2021 |
| Term End1: | 16 August 2021 |
| Predecessor1: | Anwar Ibrahim |
| Successor1: | Hamidah Khamis Ruziah Mohd Tahir |
| Birth Name: | Muhaini binti Zainal Abidin |
| Birth Date: | 12 November 1961[1] |
| Children: | 4 |
Datin Sri Muhaini binti Zainal Abidin (Jawi: مهيني بنت زين العابدين; born 12 November 1961) is a Malaysian who is the wife of Dato’ Sri Ismail Sabri Yaakob,[2] the 9th Prime Minister of Malaysia from August 2021 to November 2022 and 13th Deputy Prime Minister of Malaysia from July 2021 to August 2021.[3]
In 1979, Muhaini became friends with Ismail Sabri Yaakob, who was 18 at the time.[4] She married him in 1986. They had four children – three sons and one daughter.[3] [5] [6]
One of her sons, Dafi (born Gadaffi bin Ismail Sabri), was a participant in the fifth season of reality program Akademi Fantasia in 2007. Her only daughter, Nina Sabrina, has married a fashion designer named Jovian Mandagie,[5] [6] but divorced in August 2023.[7]