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.
If an internal link led you here, you may wish to change the link to point directly to the intended article.
If an internal link led you here, you may wish to change the link to point directly to the intended article.