2nd meridian may refer to:

• 2nd meridian east, a line of longitude east of the Greenwich Meridian
• 2nd meridian west, a line of longitude west of the Greenwich Meridian
• The Second Principal Meridian in Illinois and Indiana, United States, 86°28' west of Greenwich
• The Second Meridian of the Dominion Land Survey in Canada, 102° west of Greenwich
• Meridian 2, a Russian communications satellite

This disambiguation page lists articles associated with the title 2nd meridian.
If an internal link led you here, you may wish to change the link to point directly to the intended article.