Lines of Communication can refer to:
- Lines of Communication (Babylon 5), an episode from the fourth season of the science-fiction television series Babylon 5.
- Lines of Communication (London), English Civil War fortifications built around London between 1642 and 1643.
- See also
line of communication (or communications) is the route that connects an operating military unit with its supply base. Supplies and reinforcements are transported along the line of communication, therefore a secure and open line of communication is vital for any military force to continue to operate effectively.