Around the world, Howarth (Howarth 
) is a rare masculine first name. The forename Howarth is characteristic of Reunion, where it is quite a common male name, the United Kingdom, where it is a very rare unisex name, and Indonesia, where it is a very rare masculine name. Predominantly, Howarth is the last name as well as the forename.
| VARIANT | COUNTRY |
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| Howarth | Canada, Australia, United States, United Kingdom, South Africa |
| willis openshaw howarth botanist (1890-1964) (b. 1890) |
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| spencer cyril howarth American politician, US (b. 1902) |
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| graham howarth British entomologist, GB (b. 1916) |
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| hedley howarth New Zealand cricketer (1943-2008), NZ (b. 1943) |
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| lee howarth English football defender (born 1968), GB (b. 1968) |
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| howarth, linne Professor at the Faculty of Information, University of Toronto |
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| rowland nathaniel howarth Peerage person ID=662620 |
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| sir edward howarth Peerage person ID=593606 |
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| unknown child howarth Peerage person ID=620941 |
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