In the world, Østergaard (Østergaard 
) is an extremely rare unknown gender given name. Much more prevalently, Østergaard is the last name as well as the forename.
| VARIANT | COUNTRY |
|---|---|
| Østergaard | Norway, Australia, United Arab Emirates, Sweden, Denmark |
Oestergaard, Ostergaard, and Østergård
| bent høgsbro østergaard (b. 1904) |
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| flemming østergaard Danish businessman, DK (b. 1943) |
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| flemming østergaard Danish architect, born 1949 (b. 1949) |
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| helle østergaard researcher (ORCID 0000-0002-8986-044X) |
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| kasper zinck østergaard Ph.D. Aalborg Universitet 2008 |
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