Simplon Pass (Italian: Sempione) is a mountain pass at 2,008 m (6,589 ft) in the Lepontine Alps between Switzerland and Italy. It connects Brig in Valais with Domodossola in Piedmont. The pass itself is, together with the first villages across the border such as Gaby, still in Switzerland.

The Simplon Tunnel is a railroad tunnel that likewise connects Brig with Domodossola, though its relatively straight trajectory does not run under the pass itself. It actually consists of two single-track tunnels built nearly 20 years apart. For more than half a century it was considered to be the longest tunnel in the world (see World's longest tunnels).

The former Simplon département (the Swiss canton Valais) was named after the pass.

Mountain passes of Switzerland | Mountain passes of the Alps

Valais

Simplonpass | Simplon | گردنه سیمپلون | Col du Simplon | Passo del Sempione | Simplonpas | Przełęcz Simplon | Simplon