Seddon may refer to:
People
- Seddon (surname)
Places
Australia
- Hundred of Seddon, a cadastral unit in South Australia
- Seddon Conservation Park, a protected area in South Australia
- Seddon, South Australia, a locality
- Seddon, Victoria, a suburb
- Seddon railway station
New Zealand
- Seddon, New Zealand, a town
- Seddonville, a locality
See also
- Seddon Atkinson, former British vehicle manufacturer