A sailboat mast is an elevated pole attached to the ship's deck. It connects the sail's length to the boat while also providing structural support for the sail's form. Sailboat masts are the most prominent characteristic of sailboats because of their role in securing the sails. Modern sailboat masts are commonly made of aluminum, whereas wooden masts are employed in traditional vessels.

A sailboat mast serves as an essential element in the boat's rigging setup and plays a vital part in utilizing wind power to drive the vessel forward. The mast's height differs based on the sailboat's size and type, directly influencing both the sail area and the boat's overall performance. Alongside the boom, which is a horizontal spar affixed beneath the mast, sailors utilize the mast to manage the configuration and positioning of the sails, enhancing their performance in varying wind situations.

Fundamentally, sailboat masts keep the sails lifted, enabling them to harness the wind efficiently. Without a mast, the sails cannot be lifted and arranged to utilize the wind's force.