RV4 may refer to:

• Mandala 4, the fourth mandala of the Rigveda
• Norwegian National Road 4 (Norwegian: {{lang|no|Riksvei 4}})
• Van's Aircraft RV-4, a kit aircraft

• Harvey J. Alter
• Harvey Jason
• Harvey J. Brudner
• Harvey J. Corson
• Harvey Jerome Brudner
• Harvey J. Kaye
• Harvey John Moberly
• Harvey John Moberly (fur trader)
• Harvey John Moberly, fur trader
• Harvey Johnson
• Harvey Jones
• Harvey Karman
• Harvey Kaye (university administrator)
• Harvey Knudson
• Harvey Konigsberg
• Harvey (LA)
• Harvey Lainson
• Harvey Lavan Cliburn, Jr.
• Harvey Lee Yeary II
• Harvey Leibenstein
• Harvey Leonard
• Harvey Leroy "Lee" Atwater
• Harvey Levin
• Harvey Lichtenstein
• Harvey Lipschultz (TV character)