Last name Pettijohn (Pettijohn 
) , globally, is quite a rare surname. The family name Pettijohn is habitual in the United States, where it is a rare surname, New Zealand, and Canada, where it is a very rare surname.
| VARIANT | COUNTRY |
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| Pettijohn | United Kingdom, Canada, United States, New Zealand |
| francis j. pettijohn geologist, US (b. 1904) |
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| bruce a. pettijohn (b. 1920) |
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| kyle a pettijohn researcher |
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| j. g.d. pettijohn American politician – Minnesota -House 1868 (District 3), US |
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| robert a. pettijohn |
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