Relationship most often refers to:

• Interpersonal relationship, a strong, deep, or close association or acquaintance between two or more people
• Correlation and dependence, relationships in mathematics and statistics between two variables or sets of data
• Semantic relationship, an ontology component
• Romance (love), a connection between two people driven by love and/or sexual attraction
• "Relationships", an episode of the British TV series As Time Goes By
• The Relationship, an American rock band
  • The Relationship (album), their 2010 album
• The Relationships, an English band who played at the 2009 Truck Festival
• Relationships, a 1994 album by BeBe & CeCe Winans
• Relationships, a 2001 album by Georgie Fame
• "Relationship", a song by Lakeside on the 1987 album Power
• "Relationship", a song by [Mumzy Stranger from his 2008 mixtape
• "Relationship", a song by Young Thug from the 2017 album Beautiful Thugger Girls