Last name Rahayu (Rahayu 
) , across the world, is a widespread surname. The surname Rahayu is characteristic of South-eastern Asia, particularly Indonesia, where it is a common surname, Malaysia, where it is quite a common surname, and Brunei, where it is quite a rare surname. Measured by absolute frequency, the name is most common in Indonesia, Malaysia, and Taiwan. Very seldom, Rahayu is the forename as well as the last name.
| VARIANT | COUNTRY |
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| Rahayu | Malaysia, Hong Kong, Indonesia, Saudi Arabia, Taiwan |
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rahayu supanggah Indonesian composer, ID (b. 1949) |
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rahayu purwanti politician, ID (b. 1972) |
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rahayu mahzam Singaporean politician, SG (b. 1980) |
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rahayu saraswati Indonesian politician, ID (b. 1986) |
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| rahayu effendi Indonesian actress, ID (b. 1942) |
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| dwi listyo rahayu Indonesian carcinologist, ID (b. 1957) |
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| dra anizar rahayu Indonesian politician (born 1958), ID (b. 1958) |
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| sri rahayu Indonesian politician, ID (b. 1960) |
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| enny puri rahayu Indonesian politician (born 1960 in Surabaya), ID (b. 1960) |
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| riri sutrariana rahayu Indonesian politician (born 1961 in Bandung), ID (b. 1961) |
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| rahayu wardani soeprapto Indonesian politician (born 1963 in Nganjuk), ID (b. 1963) |
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| luluk puji rahayu Indonesian politician (born in Solo), ID (b. 1963) |
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| yeni rahayu Indonesian politician (born 1964 in Cirebon), ID (b. 1964) |
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| rahayu senjayawati Indonesian politician (born 1965 in Denpasar), ID (b. 1965) |
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| amy yayuk sri rahayu ID (b. 1955) |
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