Routing is the process of path selection in a network, such as a computer network or transportation network.

Routing may also refer to:

• Route of administration, the path by which a drug, fluid, poison or other substance is brought into contact with the body
• Hollowing out an area of wood or plastic using a router (woodworking)
• National Routeing Guide, a guide to trains over the United Kingdom's rail network
• Routing (hydrology), a technique used to predict the changes in shape of a hydrograph
• ABA routing transit number, a bank code used in the United States
• Routing number (Canada)
• Weather routing

In electronics and computer technologies:

• Routing (electronic design automation), a step in the design of printed circuit boards and integrated circuits
• The packet forwarding algorithm in a computer network
• The role of a router hardware in a computer network