R2R may refer to:
Record to report, a finance and accounting management process R-2R, a configuration of resistor ladder Reel-to-reel, Reel-to-reel audio tape recording Right to repair Right to Reply, a former British television series Roll-to-roll, creating electronic devices on flexible rolls S-Line Raleigh to Richmond project project, rail infrastructure project in the U.S. states of North Carolina and Virginia