Datuk Wira Hajah Mas Ermieyati binti Samsudin (Jawi: مس إرمياتي بنت شمس الدين; born 13 November 1976) is a Malaysian politician who has served as Chairperson of the Public Accounts Committee (PAC) since April 2023^[1][2] and as the Member of Parliament (MP) for Masjid Tanah since May 2013. She served as Deputy Minister in the Prime Minister's Department in charge of Parliament and Law in the Barisan Nasional (BN) administration under former Prime Minister Ismail Sabri Yaakob and former Minister Wan Junaidi from August 2021 to the collapse of BN administration in November 2022, Deputy Minister of Entrepreneur Development and Cooperatives in the Perikatan Nasional (PN) administration under former Prime Minister Muhyiddin Yassin and former Minister Wan Junaidi Tuanku Jaafar from March 2020 to the collapse of the PN administration in August 2021^[3][4] and the Deputy Minister of Tourism and Culture in the BN administration under former Prime Minister Najib Razak and former Minister Mohamed Nazri Abdul Aziz from July 2015 to the collapse of the BN administration in May 2018. She is a member of the Malaysian United Indigenous Party (BERSATU), a component party of the PN coalition and was a member of United Malays National Organisation (UMNO), a component party of the BN coalition. She has served as the 2nd Deputy Women Chief of BERSATU since August 2020 and the Women Youth Chief of the UMNO from October 2013 to June 2018. After the defeat of BN to the Pakatan Harapan (PH) opposition coalition in the 2018 general election, she resigned from UMNO in 2018 and joined BERSATU in 2019. She is also the second female PAC chairperson after Noraini Ahmad in Malaysian history.^[5][6][7][8]

She was born on 13 November 1976 at the Malacca General Hospital and is the second child of Hjh Salbiah Ahmad and Hj Samsudin Md Ali. Raised in Malacca and earned an early education at Methodist Girls School (2) Tengkera, Melaka and Sekolah Kebangsaan Ramuan China Besar, Masjid Tanah Melaka. She then received an offer to Full Boarding School, Sekolah Tun Fatimah, Johor Bahru (1989-1993) and furthered her studies at Law Matriculation and Law Degree in National University of Malaysia (UKM), Bangi, Selangor.^[9]

After graduating with a Law Degree from UKM, she started her career as an advocate and solicitor at lawyer Khairul Latif & Associates and Adillah A. Nordin. In 2004, with two partners, Mohd Khairul Nizam Abd Kadir and Desmond Ho Chee Cheong, Mas Ermieyati opened their own legal firm, Messrs. Ermiey Nizam & Ho. The same time of interest in volunteer work is well-suited to the soul. Since school age and as early as 15, she has been active with the Association of Youth Movement 4B (GB4B). She is currently the Member of the GB4B Malaysia Top Council Member.^[9] As the MP for Masjid Tanah, she selectively insinuated with unfounded claims that the Anwar government was trying to bring in more permanent residents from China.^[10]

Mas Ermieyati is a youth activist. At the Melaka State level, she is the Chairman of the 4B (M) Youth Mosque of Tanah Masjid and the Youth Movement of the 4B (M) Youth Movement of Malacca. At the national level, she was the Chairman of the 4B Malaysia Youth Movement Culture Bureau, the Secretary of the 4B Malaysia Youth Movement Discipline Committee and the Malaysian Youth Movement 4B Youth Movement. She is currently the Council Member of the 4B Malaysia Youth Youth Movement.

She married Mohd Helmy Abd Talib and blessed with 4 sons that are Haiqal, Hakim, Hafiy and Hasif and a daughter named Eiman Miesha.

•  Negeri Sembilan
  • Member of the Order of Loyalty to Negeri Sembilan (ANS) (2008)^[18]
•  Malacca :
  • Companion Class I of the Exalted Order of Malacca (DMSM) – Datuk (2014)^[19]
  • Knight Commander of the Exalted Order of Malacca (DCSM) – Datuk Wira (2017)^[19][20]

• Masjid Tanah (federal constituency)
• Tanjung Bidara (state constituency)