Baron Robartes is a hereditary peerage first created for Richard Robartes (26 January 1625); the first creation merged with the Earldom of Radnor in 1679. The peerage was created a second time for Thomas Agar-Robartes (13 December 1869); it merged with the Viscountcy of Clifden in 1899.

Barons Robartes, First Creation (1625)

• Richard Robartes, 1st Baron Robartes (d. 1634)
• John Robartes, 2nd Baron Robartes (was created Earl of Radnor in 1679)
• See Earl of Radnor for further holders of this title

Barons Robartes, Second Creation (1869)

• Thomas Agar-Robartes, 1st Baron Robartes (1808–1882)
• Thomas Agar-Robartes, 2nd Baron Robartes (became the 6th Viscount Clifden in 1899)
• See Viscount Clifden for further holders of this title