Passthrough (or pass-through) may refer to:
- Passthrough (electronics), a device used to pass an unmodified signal
- Passthrough (architecture), an opening between the kitchen and the dining room
- Pass-through (economics), offsetting a change in costs by changing prices
- Pass-through entity, a term in the US tax law
- Pass-through certificate, a financial instrument accessing the related Pass-through security
- Pass-through, a sporting term to indicate a player that has won a game or match due to forfeit by their opponent[verification needed]