J. R. Campbell may refer to:

• J. R. Campbell (communist) (1894–1969), British communist activist and editor
• J. R. Campbell (judge) (1918–1990), American judge in Oregon

• Rosenborg BK 2
• Rosenborg BK 3
• Rosenborg (disambiguation)
• Rosenborg IHK
• Rosenborg Ishockeyklubb
• Rosenborg (station)
• Rosenbrock methods
• Rosenburg
• Rosen, Burgas Province
• Rosenburg case
• Rosenburg, Oregon
• Rosenbush
• Rosen college
• Rosencrans Cabin Historic District
• Rosencrantz and Guildenstern are Undead
• Rosencrantz and guildenstern are undead
• Rosencrantz and Guildenstern Are Undead
• Rosencrantz and Guildenstern (play)
• Rosencrantz & Guildenstern Are Dead
• Rosendael
• Rosendal Castle
• Rosendal Castle (Helsingborg)
• Rosendal Castle (Stockholm)
• Rosendal (disambiguation)
• Rosendale-Brandon School District