Leon Bazyli Sapieha (Polish pronunciation: [ˈlɛɔn baˈzɨli saˈpjɛxa]; March 20, 1652 – November 9, 1686) was a Polish-Lithuanian politician.

He took part in the Polish relief expedition to Vienna in 1683, under King Jan Sobieski.

In 1684 he was appointed general of the Lithuanian army and in 1683 he participated in the campaign against Ottoman Turkey.

He died in Warsaw on November 9, 1686 as a result of an accidental firing of a gun.

[1] After his death, a notable sepulchral monument of Sapieha was made around 1687, an original composition in the style of the great works by Bernini.