Maud de Braose, Baroness Mortimer

Maud de Braose, Baroness Mortimer (1224 – shortly before 23 March 1301) was a noble heiress, and one of the most important, being a member of the powerful de Braose family which held many lordships and domains in the Welsh Marches. She was the wife of Roger Mortimer, 1st Baron Mortimer, a celebrated soldier and Marcher baron.

A staunch Royalist during the Second Barons' War, she devised the plan to rescue Prince Edward (the future King Edward I of England) from the custody of Simon de Montfort, 6th Earl of Leicester.

She is sometimes referred to as Matilda de Braose.

Maud was born in Wales in 1224, the second eldest daughter and co-heiress of Marcher lord William de Braose and Eva Marshal. She was also a co-heiress to a portion of the Brewer estates, through her paternal grandmother Gracia, daughter of the prominent Angevin curialis William Brewer.

Maud had three sisters, Isabella, wife of Prince Dafydd ap Llywelyn; Eva, wife of William de Cantilupe; and Eleanor, wife of Humphrey de Bohun.

Her paternal grandparents were Reginald de Braose and Grecia de Briwere, and her maternal grandparents were William Marshal, 1st Earl of Pembroke, and Isabel de Clare, 4th Countess of Pembroke, daughter of Strongbow and Aoife of Leinster.