Last name Boyack (Boyack 
) , all over the world, is a rare surname. The cognomen Boyack is habitual in Trinidad and Tobago, where it is quite a rare surname, New Zealand, where it is a rare surname, and the United Kingdom. In absolute terms, it most frequently occurs in the United States, the United Kingdom, and Australia.
| VARIANT | COUNTRY |
|---|---|
| Boyack | Canada, United Kingdom, United States, New Zealand, Australia |
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alf boyack Australian rules footballer, AU (b. 1877) |
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| ronald boyack Trinidadian cricketer, TT (b. 1906) |
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sarah boyack Scottish politician (born 1961), GB (b. 1961) |
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pat boyack American electric blues guitarist and songwriter, US (b. 1967) |
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rachel boyack New Zealand Labour Party candidate in the 2020 election, NZ |
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| merrilee boyack American politician, US (b. 1958) |
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| david gerald boyack (born 1970) (b. 1970) |
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| keryn mary boyack (born 1972) (b. 1972) |
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| steven boyack Scottish footballer (born 1976), GB (b. 1976) |
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| nicholas john boyack New Zealand historian and journalist |
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| kevin boyack researcher |
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| david angus boyack Peerage person ID=265973 |
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| alexander boyack British Royal Navy officer, lieutenant in 1804 |
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| isaac boyack researcher (ORCID 0000-0001-9113-6541) |
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| stephen wayne boyack Ph.D. Massachusetts Institute of Technology 1985 |
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