João de Sousa, 3rd Marquis of Minas (Viana do Castelo; 29 December 1666 - murdered on 17 September 1722) was a Portuguese nobleman.

Both young men fled to France, where they came under the protection of François de Neufville, duc de Villeroi and fought in his army.

After being pardoned by the King of Portugal in 1704, he returned to his home country and served under his father during the War of Spanish Succession and eventually reached the rank of Lieutenant General of Cavalry.

On 14 January 1714 he was made a gentleman of the chambers King John V of Portugal.

He was made a member of the Royal Council of War on 26 October 1714.