Feeder, a term for a small regional air carrier which operate from small towns and rural strips to larger, usually, hub airports for larger airlines. They may be independent contractors or wholly owned subsidiaries of the larger airline.

Feeder (band), the Welsh rock group

RF feeders, RF cables usually carrying higher power levels.

Feeder, a regional term for frontage road, or other small road eventually delivering traffic to a larger one

Feeder (fetish), someone who gains sexual pleasure from helping another gain weight

Feeder trains, a term for collecting passengers by train to the hub airports for larger airlines. Also known as Rail Fly.

Feeder ship, a term for small to medium container ships which provide the collecting and distribution of containers from/to smaller ports to/from the big hub-ports connected to the worldwide container lines.

Feeder, a software application for creating, editing and publishing RSS feeds on Mac OS X.