Vidalia may refer to:
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''Vidalia'' (alga), a genus of red algae in the family Rhodomelaceae
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''Vidalia'' (fly), a genus of tephritid or fruit flies in the family Tephritidae
;Places
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Vidalia, Georgia
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Vidalia, Georgia, micropolitan area, an area defined by the United States Census Bureau
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Vidalia Regional Airport, in Georgia
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Vidalia, Louisiana
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Natchez–Vidalia Bridge, two twin cantilever bridges carrying US Routes 65, 84 and 425 across the Mississippi River between Vidalia, Louisiana and Natchez, Mississippi
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Vidalia High School (disambiguation)
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Vidalia High School (Louisiana)
; Other
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Vidalia onion, a sweet onion of certain varieties, grown in a production area defined by law in Georgia
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Vidalia (software), a software program which is a cross-platform controller GUI for Tor, built using the Qt toolkit
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"Vidalia" (song), a song recorded by Sammy Kershaw
{{disambig, genus