Tunneling

Tunneling or tunnelling may refer to:


 * Digging tunnels (the literal meaning)
 * Hobby tunneling
 * Quantum tunneling, the quantum-mechanical effect where a particle crosses through a classically forbidden potential energy barrier
 * Tunneling (fraud), a fraud committed by a company's own management or by major shareholders
 * Tunneling protocol, transmitting one computer network protocol that is encapsulated inside another network protocol