O line
O line or O-line may refer to:
- Tseung Kwan O line, an MTR rail line in Hong Kong
- Norfolk Southern O-Line, a freight rail line in North Carolina, United States
- O-line (IRCd), the operator line of an IRC daemon configuration file
- O-line, or offensive line, a formation in North American football
See also[edit]
This disambiguation page lists articles associated with the title O line.
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