CCN1 may refer to:

• Cyclin A2 - a protein in the cyclin family
• CYR61 - a protein in the CCN family

• Brusartsi
• Brusartzi
• Bruschetta
• Brusells
• Brush
• Brushaber v. Union Pacific
• Brushaber v. Union Pacific Railroad Co.
• Brushback
• Brushback pitch
• Brush, CO
• Brush, Colorado
• Brush Creek
• Brush Creek, OK
• Brush Creek, Oklahoma
• Brush Creek Township, Faribault County, Minnesota
• Brush Creek Township, Fulton County, Pennsylvania
• Brush Creek Township, MN
• Brush Creek Township, PA
• Brush Development Company
• Brush (disambiguation)
• Brushed metal
• Brushed Metal
• Brush (electric)
• Brushes
• Brushfield spots