1. Named after tribe

The word Clackamas may refer to:

• Clackamas people, a Native American people in what is now Oregon
• The now extinct language spoken by the tribe, one of the Chinookan languages

Named after tribe

• The Clackamas River, a tributary of the Willamette River in northwestern Oregon
• Clackamas County, Oregon
  • Clackamas, Oregon, a community in Clackamas County
  • Clackamas High School in Clackamas, Oregon
  • Clackamas Community College in Oregon City, Clackamas County
  • The North Clackamas School District in Clackamas County
• Clackamas iris or Iris tenuis
• "Clackamas", a codename for Intel's 64-bit processor technology

• Mario Pedretti
• Mario Peressin
• Mario Perez
• Mario Perez (footballer born 1946)
• Mario Perez Saldivar
• Mario Perillo
• Mario Petri
• Mario P. Fiori
• Mario Picross
• Mario Pierani
• Mario Pietruzzi
• Mario Pino (geologist)
• Mario Pisu
• Mariopol
• Mario Polanco
• Mariopolis
• Mario Ponzo
• Mario Posch
• Mario Power Soccer
• Mario Prada
• Mario Prišć
• Mario Puratic
• Mario Puratić
• Mario Pérez
• Mario Pérez (disambiguation)