| Piyamavadi Sri Bajarindra Mata | |
| House: | Chakri Dynasty |
| Father: | Lord Asa Samdaeng (Taeng Suchritakul) |
| Mother: | Dame Sucharitthamrong (Nag Sucharitakul) |
| Birth Date: | 5 March 1838 |
| Birth Place: | Siam |
| Death Place: | Bangkok, Siam |
Princess Piyamavadi Sri Bajarindra Mata (th|สมเด็จพระปิยมาวดี ศรีพัชรินทรมาตา;) or Chao Khun Chom Manda Piam (th|เจ้าคุณจอมมารดาเปี่ยม) née Piam Sucharitakul (th|เปี่ยม สุจริตกุล;) Her Royal Highness Princess Piyamavadi was one of the royal wives of King Mongkut.[1] All three of her daughters became queens.
Her father was the original caretaker of King Mongkut while he ordained, and he passed in the first year of the reign of King Mongkut. Thus the King patronized his family, bestowed the title Thao (Dame) to his wife, gave her the duties, and sponsored his children.
When her grandson, Crown Prince Maha Vajiravudh (Rama VI) acceded to the throne to be King Vajiravudh, he promoted her become to the princess of Thailand as Her Royal Highness Princess Piyamavadi Sri Bajarindra Mata (meaning: Piam, Princess Mother of Queen Sri Bajarindra). after she died.
She had six children with King Mongkut: