Recklinghausen may refer to:

• Recklinghausen (city), a city in Germany
• Recklinghausen (district), a district in Germany
• Neurofibromatosis type I, also known as Von Recklinghausen syndrome
• Heinrich von Recklinghausen (1867-1942), a German physiologist
• Friedrich Daniel von Recklinghausen, a German pathologist

• Allegheny-spurge
• Allegheny station (disambiguation)
• Allegheny station (PAAC)
• Allegheny stonecrop
• Allegheny Technologies Incorporated
• Allegheny (titular see)
• Allegheny Township, Butler County
• Allegheny v. ACLU
• Allegheny Valley Expressway
• Allegheny Valley School
• Allegheny v. American Civil Liberties Union
• Allegheny West, Philadelphia, Pennsylvania
• Allegiance (album)
• Allegiance (As Blood Runs Black album)
• Allegiance (band)
• Allegiance Commission
• Allegiance (company)
• Allegiance Council
• Allegiance (film)
• Allegiance (musical)
• Allegiance oath controversy
• Allegiance oath of James I
• Allegiances
• Allegiance Theater
• Allegiance (TV series)