By client
- Rabobank
- Rackspace
- Radio Belgrade
- Ramboll
- Randa Luggage
- Rapidfire
- Rasselstein
- Rathbone Brothers Plc.
- Ratnamani Metals and Tubes
- Röchling Automotive
- RCS Global
- Reader's Digest
- RealConnections
- Real estate development and agribusiness company in California
- RealPlus
- Recipharm AB
- Recology
- Red Bull Racing
- Redcats Group
- Redecard
- Rede D’Or São Luiz
- Red Funnel
- Redstone
- Reed & Mackay
- Reflexis Systems, Inc.
- Regence BlueCross BlueShield of Oregon
- Rehau AG + Co.
- Reichle & De-Massari AG (R&M)
- Reliance Life Insurance Company
- Reliance Life Insurance Corporation
- Reliance Life
- Reliance Security Group
- RenderRocket
- Renewtek
- Renfe
- Repsol
- Republic of Turkey Social Security Institution
- Research Firm
- REXEL Austria GmbH
- RFID-based Automotive Network (RAN)
- Rheinisch-Westfälischer Genossenschaftsverband e. V.
- Rheinmetall AG
- Ricca S.r.l.
- Rice University
- Ricoh Americas Corporation
- Ricoh Company, Ltd.
- Ricoh
- Rietumu Banka
- Rijkswaterstaat
- Ringnes AS
- Ringnes
- Riverside Bank
- Rizzoli Orthopaedic Institute
- RJS Software Systems and Mainline Information Systems
- Robert Heath Heating
- Robert R. Taylor Network
- Robert Wood Johnson University Hospital
- ROBINSON Club GmbH
- Rocket Software, Inc.
- Rodale - Explore
- Rodale - Web Analytics
- Rohde & Schwarz
- Rohm and Haas
- Roland Corporation