Last name Hobby (Hoby 
, อดิเรก 
, Hobi 
) , around the world, is a common surname. The cognomen Hobby is habitual in Liechtenstein, where it is quite a common surname, Tunisia, and Switzerland. Not in comparison with a country's population, it most frequently occurs in Algeria, Tunisia, and the United States. Likewise, Hobby is the forename as well as the last name.
| VARIANT | COUNTRY |
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| Hoby | Tunisia, Morocco, Egypt, Madagascar, United States |
| อดิเรก | Thailand |
| Hobi | Tunisia, Morocco, Algeria, Madagascar, United States |
| Hobby | Indonesia, Tunisia, Morocco, Egypt, United States |
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charles hobby Canadian politician, US (b. 1665) |
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willie cooper hobby First Lady of Texas (b. 1876) |
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william pettus hobby American politician; Governor of Texas, 1917-1921, US (b. 1878) |
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| james h. hobby United States Navy officer, US (b. 1835) |
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| alfred marmaduke hobby American politician and poet (1836-1881), US (b. 1836) |
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| edwin e. hobby Confederate soldier and jurist, US (b. 1843) |
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oveta culp hobby US Army officer and government official (1905-1995), US (b. 1905) |
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william pettus hobby, jr. American politician; Texas Lieutenant Governor, 1973-1991, US (b. 1932) |
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| william m. hobby United States Navy officer for whom a U.S. Navy ship was named (1899-1942), US (b. 1899) |
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| bertram maurice hobby English entomologist, GB (b. 1905) |
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| gladys lounsbury hobby American scientist (1910-1993), US (b. 1910) |
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david hobby American photographer, US (b. 1965) |
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| wilbur hobby American labor unionist (b. 1925) |
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| russell hobby Australian fencer, AU (b. 1933) |
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matt hobby American actor and comedian, US (b. 1985) |
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