Globally, Sadamasa (Sadamasa 
, Огасавара 
) is quite a common masculine first name. The forename Sadamasa is habitual in Eastern Asia, particularly Japan, where it is quite a rare masculine name.
| VARIANT | COUNTRY |
|---|---|
| Sadamasa | Japan, China, United States, India, Brazil |
| Огасавара | Russia |
| kasannoin sadamasa (b. 1218) |
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| matsudaira sadamasa [松平定政] daimyo of Kariya (b. 1610) |
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| matsudaira sadamasa [松平定能] hatamoto (b. 1758) |
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| ogasawara sadamasa (b. 1840) |
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|
utagawa sadamasa ukiyo-e artist |
|
| fujiwara no sadamasa |
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| hatakeyama sadamasa |
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| ishimaru sadamasa |
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