In all the world, Dayangku (Dayangku 
) is a rare female forename. The first name Dayangku is characteristic of South-eastern Asia, particularly Brunei, where it is quite a rare female name, Malaysia, where it is a rare female name, and Indonesia, where it is a very rare female name. Much less frequently, Dayangku is the last name as well as the forename.
| VARIANT | COUNTRY |
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| Dayangku | Indonesia, Brunei, Malaysia, Australia, Singapore |
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dayangku intan Malaysian singer and politician, MY (b. 1966) |
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dayangku hajah mazlizah binti pengiran haji mahalee Permanent Representative of Brunei Darussalam, BN |
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| dayangku aminah Bruneian singer, actress, BN |
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| dayangku noorfazidah awang shri researcher |
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Ku, Zaini, Mahrup, Salleh, Suliza, Liyana, Farrah, Ismail, Suhaila, Asyiqin, Yusop, Awangku, Rafidah, Nabilah, Hajarul, Ibrahim, Syahirah, Khalizawati, Pengiran, Nurul Ain, Sharmilawati, Ratuddin, Wahed, Osman, Intan, Ali, Arni, Amin, Aziz, Tuah, Noor, Ifni, Omar, Sarah, Sabri, Sapri, Asmah, Ahmad, Awang, Bakar, Binti, Rusli, Desia, Damit, Jafar, Hipni, Nurafiqahwinaini, and Nur Farhanah