Last name Toom (توم 
, Tomba 
, Toom 
) , in the world, is a common cognomen. The cognomen Toom is characteristic of Estonia, where it is quite a common surname, Sudan, and the Democratic Republic of the Congo, where it is quite a rare surname. In absolute terms, it is commonest in India, Sudan, and the Democratic Republic of the Congo. Much less frequently, Toom is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| توم | Iraq, Egypt, Libya, Sudan, Saudi Arabia |
| Tomba | Estonia, Italy, India, Democratic Republic of the Congo, Saudi Arabia |
| Toom | Estonia, Italy, India, Netherlands, Sudan |
| Тоом | Kazakhstan, Russia, Ukraine |
| aleksander toom Estonian prophet, EE (b. 1823) |
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artur toom Estonian ornithologist, EE (b. 1884) |
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willem den toom Ministry of Defence (1911–1998), NL (b. 1911) |
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| willempje toom NL (b. 1886) |
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| johannes toom Estonian weightlifter (1896–1972), EE (b. 1896) |
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| liidia toom EE (b. 1890) |
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| kusta toom EE (b. 1892) |
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| adrianus toom NL (b. 1895) |
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| johannes toom Estonian boxer (1907–1960s), EE (b. 1907) |
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| viktor toom (b. 1897) |
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| arie den toom NL (b. 1906) |
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yana toom Estonian politician, RU (b. 1966) |
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taavi toom Estonian diplomat, EE (b. 1970) |
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| leon toom Soviet writer, RU (b. 1921) |
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| willem den toom Dutch theologian (1928-2007), NL (b. 1928) |
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