Sir James Robert Walker, 2nd Baronet JP, DL (19 October 1829 – 12 June 1899) was a British Conservative politician.
He was the son of Sir James Walker, 1st Baronet and his first wife Mary Denison. Walker was educated at Christ Church, Oxford and graduated with a Bachelor of Arts in 1851 and a Master of Arts in 1860. In 1883, he succeeded his father as baronet.
Walker, who sometime served with the Yorkshire Hussars, was a Member of Parliament (MP) for Beverley between 1860 and 1865 and High Sheriff of Yorkshire in 1888. He was a Deputy Lieutenant and justice of the peace of the North Riding as well as a justice of the peace of the East Riding of Yorkshire.
On 23 June 1863, Walker married Louisa Susan Marlborough Heron-Maxwell, third daughter of Captain Sir John Heron-Maxwell, 6th Baronet at St James's Church, Piccadilly. They had nine children. Walker was succeeded in the baronetcy by his oldest son James Heron.