Theodul Pass, elevation 3,295 metres (10,810 ft), (German: Theodulpass, Italian: Colle del Teodulo, French: Col de Saint-Théodule, Walser German: Theoduljoch) is a high mountain pass across the eastern Pennine Alps, connecting Zermatt in the Swiss canton of Valais and Breuil-Cervinia in the Italian region of Aosta Valley.

The pass lies between the Matterhorn on the west and the Breithorn on the east and is overlooked by the Theodulhorn and Testa Grigia.

On the Italian side, the pass can be reached from Breuil-Cervinia by a dead-end trail.

In 1965, Percy Stallard (aged 55) rode his bicycle solo over the Theodul Pass.

The Rough Stuff Fellowship, an organisation for enthusiasts of cross-country cycling, acknowledged that it was probably the first time a cyclist had done it.