Globally, 北原 (Kitahara 
, 北原 ) is a rare largely boy's, but uncommonly female first name. The forename 北原 is characteristic of Eastern Asia, particularly China, where it is a very rare dominantly male, but infrequently girly name. More frequently, 北原 is the last name as well as the forename.
| VARIANT | COUNTRY |
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| Kitahara | Japan, China, Indonesia, United States, Brazil |
| 北原 | China |
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北原多作 Japanese Fishery scientist and Oceanographer, JP (b. 1870) |
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北原白秋 Japanese tanka poet, JP (b. 1885) |
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| 北原 鉄雄 JP (b. 1887) |
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| 北原鉱治 Japanese citizen activst, JP (b. 1922) |
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| 北原亞以子 Japanese novelist, JP (b. 1938) |
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| 北原隆 Japanese ambassador, JP (b. 1951) |
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| 北原 京子 Japanese archer, JP (b. 1951) |
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| 北原リエ Japanese actor and novelist, JP (b. 1958) |
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| 北原遥子 Japanese actress, JP (b. 1961) |
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| 北原 もも Japanese singer and dancer, JP |
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