Sir Frederick Leopold Arthur, 2nd Baronet (Plymouth, 20 December 1816 – 1 June 1878) was a British soldier.
The son of Sir George Arthur, 1st Bt and Eliza Orde Smith, he was commissioned into the 4th Foot in 1833. He transferred to the 40th Foot in 1850 and the 18th Hussars in 1863. He became a colonel, and succeeded to the baronetcy in 1854.
On 24 April 1856, he married Lady Elizabeth Hay-Drummond, daughter of the Earl of Kinnoull. They had three children.