OTN may refer to:
- OTN1, a Canadian television channel
- Open Transport Network, a specific ring-based telecommunication network architecture
- Optical transport network, a telecommunication network standards framework for optical networks
- Oracle Technology Network, the official online/offline community for Oracle technical professionals
- Ed-Air Airport – Oaktown, Indiana, United States (IATA code: OTN)
This disambiguation page lists articles associated with the title OTN.
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