Last name Loutit (Loutit 
) , in the world, is a rare cognomen. The surname Loutit is characteristic of Canada, where it is a rare surname, Australia, and New Zealand. In absolute terms, it is the most numerous in Canada, Australia, and the United Kingdom.
| VARIANT | COUNTRY |
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| Loutit | United Kingdom, Australia, United States, Canada, New Zealand |
| isobel loutit Canadian mathematician, educator, inventor (1909-2009) (b. 1909) |
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| john freeman loutit Australian doctor, AU (b. 1910) |
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| margaret loutit New Zealand microbiologist (1929-2020), NZ (b. 1929) |
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| alastair j loutit researcher |
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| nicky loutit British artist |
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| carrie loutit researcher |
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| thomas loutit Peerage person ID=616119 |
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| jessie loutit Canadian rower, CA (b. 1988) |
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